The best wat to assess the bands is to listen, but not all listed have mp3's, also some of the mp3's are not truly indicative of the bands core music or that it might be a good or weak track.
So how about some recommendations along these lines. For example through listening to the mp3's i found i liked Pendragon and Karnataka. I found similarities in the keyboards and soaring guitars even if one has a great singer (K) and the other an ordinary but distinctive singer (p)
So i would suggest if you like Pendragon you may like Karnataka.
If you like Yes try Genesis or Rush and.........
If you Like ELP try VDGG and.........
If you like IQ try........... and so on.
Thanks in advance.