I never liked Xenon 2 that much (But maybe that's because when I got my Miggy, I was coming from a Shoot'em up heaven machine (the MSX) )
I think the 8 bits versions of Xenon 1 are rather better
anyway, each different person likes different games
Iancharge, Do you know Battle Squadron for Amiga? I think you should take a look at it (Even if shmups aren't your cup of tea), I bet you will like it...