Hi i recently got an SE and I'm loving it.It is in minty condition and everything still work. I want to network it with my other old macs. It is currently running 6.0.1and I think it is quite fast with that version . But would it be better to upgrade to 7 or stay on 6 (and upgrade to the last 6) It currently has 1mb ram and a 20 mb hd but I plan to upgrade it to 4MB ram and a 170 mb hd.

What should I do, 6 or 7 ?