I've reverted to 'Underrated' because it's a less awkward and shorter word.

A couple of notes:

There have been at least 15 more studio albums since 1990, and there just isn't room in one poll for that many options, so if there is interest in a part two I'll post it later.

I'm classing '25 Years On' as a Hawkwind album, since it was only released under the Hawklords name for legal reasons.  I'm less convinced about 'Church of Hawkwind', but it seems generally to be accept as canon.

*there are at least a couple of albums I might have included and chose not to. The most obvious are  'Zones' and 'Out & Intake'. Of the latter, Brock said ""it was bits and pieces we had hanging around", and more than half the tracks on 'Zones' had appeared previously in some version or another.   I realise that classing these as compilation or rarities albums invites someone to make the same case for 'PXR5', but I think this is a canonical HW album beyond any reasonable doubt.

I usually omit live albums, but the case for 'Space ritual' is just too strong. It's not going to win a poll like this anyway :)

It's impossible for me to think which album I like the most ... I can STILL (almost 70) put on Space Ritual full blast on the earphones ... and even on the stereo if it's not midnight to keep all the birds awake!

From this list I would say that HALL OF THE MOUNTAIN GRILL and ASTOUNDING SOUNDS AMAZING MUSIC ... are totally out of this world, and I constantly play "Reefer Madness" and "Steppenwolf" ... because they still make sense today ... and they are so strong.

The later versions are not appreciated as much, but ELECTRIC TEPEE, is BY FAR, one of their most under-rated and un-appreciated album ... in the tradition of "Space Ritual", it is an incredible "assault" on the senses musically and sonically ... but not something I have ever seen anyone else talk about this album. I like, occasionally, to say that it is one of the best "acid rock" albums ever ... in that it is non-stop ... and the ending piece is the one that confuses every rock fan silly ... Hawkwind shows and fests, for many days and nights were all a nice powow for everyone ... and one person that heard this said it was just crap ... I guess it doesn't say much for the GD and their versions of the powow and dance circles for years ... now gone forever ... the single thing that is missing the most at the Eugene Country Fair, that made it so special and great.

Honestly, there are other things in there that deserve credit ... SPACE BANDITS has a lot of nice things, and the material with the Native American is very powerful and deserves mention ... but there is no way that folks here can often appreciate a mixing of cultures and an understanding for each other ... that is missed altogether. It signals the eventual "powow" in ELECTRIC TEPEE ... 

LEVITATION is a very nice album, with excellent production and a different level of drumming, that made Hawkwind sound very different, but it was OK, and some of the material in it is fine, although I kinda thing that it lacks the depth and strength of other material going back to the early days ... I like GB in it, but I think his involvement, forced the band to bring the "songs" down to be more concise and tight, rather than have a flight of fancy and guitar moments ... but it did not exactly make it bad ... I simply do not seem to listen to it as much as the rest of the stuff.

The later Hawkwind, for me did not fare as well ... the revisits with Tim Blake were nice LIVE and such, but he did not stick around, or was not specifically interested in the Hawkwind material. 

All the other albums have at least one or two things worthy of mention and enjoyment, although I probably would like to take 2 of those and make ONE album out of them ... which I might think would help the legacy that WAS/IS Hawkwind, stand up longer and better.

Still a magnificent band and the only thing I would love to see is for Nik Turner and Dave Brock to mend fences and hug each other ... together they helped create a beautiful monster!

I agree with this. My favourite era is the Bob Calvert one. I place Quark, Strangeness and Charm in my top 20 albums of all time, so 'tis my vote.

I second your opinion on "Electric Teepee"; it is a great album. I also like "The Chronicle of the Black Sword" a lot; I totally fell in love with it when it came out

With Wishart's vocals and the melody/chords in this song, the verses at times sound amazingly like Amon Duul II circa 'Wolf City'.

This album also saw the very welcome return of Simon House - who absolutely shreds it with that violin solo around 5:15.  Unfortunately both he and Wishart only lasted for one studio album - but the live VHS of this lineup is worth getting. 'Palace Springs' could have been a great live album if House had been on 'Golden Void' etc.

This was a pretty tough one.

My close runner-up is 'Astounding Sounds'. It was their current album when I discovered them. I never quite got why this album received so much scorn. Side one is almost completely taken up by 'Reefer Madness' and 'Steppenwolf', both of which are classics. Side Two isn't as strong, but there isn't anything obnnoxious there except maybe 'Aubergine that Ate Rangoon'.  Other than that you have several perfectly decent instrumentals ('Chronoglide Skyway', 'City of Lagoons'), 'Kerb Crawler', which is a crunchy rocker along the lines of the non-album single 'Back on the Streets' (this must have been an awful shock considering 'Warrior on the Edge of time' was only a year earlier, but I had no problem processing the two styles). Dave Brock pokes fun at Turner's 'Kadu Flyer', but it actually has a pretty interesting melody and overalkl I've always liked it.

But I voted for 'In Search of Space'.  It gets continually overshadowed by 'Doremi', which is always cited as the beginning of HW's true Space rock sound. Which is nonsense. ISOS is where it all came together. Sure 'Master of the Universe' and 'You Shouldn't Do That' sounded awesome a year later with Lemmy and Simon King, but had they been on this album it may have sacrificed the atmospheric acoustic vibe of tracks like 'You Know You're Only Dreaming', 'We took the Wrong Step Years Ago' or 'Children of the Sun'

'Quark' is quite probably HW's best album, IMHO, but I don't know that it's badly underrated.