I would second the suggestion for trying out Supersystem 2; I have played it a few times and it is a very enjoyable game. There can be some balancing issues (as any game has) if you're trying to min/max everything, but point limits can help with that. Also, with the character creation rules, you can pretty much build any kind of hero/villain/mercenary you want.
Our group has used the Superfigs minis,
GW minis, Warzone, Warmachine, etc. etc. to represent our various superteams. Plus, if you own any scenery, it can be recycled quite nicely for Supersystem (I have a table full or urban ruins scenery... so I figure our superteams are fighting it out in the more affected areas of Paragon City... COH, anyone?)
I believe Saber's Edge (I think it's www.sabersedge.com ) has it as a pdf download for about $15.00...
-Vilegrimm