Robo Aleste is a great tide-me-over until I can get my hands on MUSHA. Solid game but the levels are kinda long, and minor enemies take too many hits, but an otherwise great game.
I was really lucky to find a Nexzr in minty fresh shape w/ spine and regs. The graphics are just amazing especially coming off some of the chip shooters.
Musha is also one of the best in the series. Definitely stick to using the laser beam and bomb weapon if want to kill stuff quicker in Robo Aleste. I love the soundtrack and the little cut-scenes to add to the atmosphere of the game. Doesn't have as vibrant graphic as Musha though. I picked mine up in '96 from Babbages for $15

) . My friend got Cobra Space Adventure for the same, which he just gave to me later on.
BTW, Nexzr is a biaaatch!!! I can't get through the third stage to save my life. Why do they make some of these games soooo hard? It is actually kinda ridiculous. I hate seeing great games almost ruined by ridiculous challenge. Try Art of Fighting 2 on the Neo Geo and you will see what I really mean. Just crazy man!!!