Soul Force is very nice, but I think I actually prefer Zeta Wing for some reason.
Neutron was good, has a bit of a Warhawk feel. Have you tried Kobo 64? It would make a PERFECT game for score attack competitions (plus you can select music or sound effects in the options ; ) ).
CD audio is not the same as chip generated tunes.... plus if the CD was any good I would want to turn off the sound effects so they didn't spoil it. :)