Steve Walsh. The choice would have been less easy if Martin Orford was included.

Ya know, I'll be very interested in finding out the reason you listed all these "keyboard" players without their respective band names, but I'm really surprised that Kit Watkins hasn't scored higher.  From a rather subjective standpoint, I have always seen Geddy as a bass player, not as a keyboardist, even though he of course plays keyboards from time to time.  Herb Schildt, I like and I like his band too, but for those who know who he is, I don't think his band is that well-liked anyway, although I find them interesting for what they are.  Trent, I've never cared much for, either as a vocalist, keyboardist or songwriter.  He tries too hard I think.  Kit is awesome and wins my vote hands down.  Walsh, I like a lot, and he might be second on my list, but it's a close call between him and the next person.  Phillips is cool, although sometimes he writes some sappy lyrics, but his music rocks, and he's a fine keyboardist in the heavy neo area.  I think he takes some of his inspiration from Walsh both as a keyboardist and vocalist.  I have to admit, don't know the last one or his band too well, so can't comment.

Anyway, Kit wins!