there are many groups listed on PA that have had records released on the famous Spiral Vertigo label, such as Atlantis, Affinity, Aphrodite's Child, Colosseum (the first), Gravy Train, Gracious!, May Blitz, Manfred Mann Earth Band, Dr.Z, Gentle Giant, Tudor Lodge, Warhorse and Uriah Heep. Some original SV issues are exchanged for many hundreds of pounds these days. Many were unknown groups and sold poorly, which is obviously the reason for their rarity. Their most successful signings were Black Sabbath and Status Quo, who sold extremely well and i would guess provided financial support for other less well known groups. As for my favourite, note the avatar!!