It's a bit old, but my vote would be for ibP. This has got to be one of the best systems out there, and very well thought out. With ibP , well, you can have one top score per game. V3arcade? Not so.
As far as installation goes, they're both pretty good, but ibP was the only one I could get working out of the box. v3 wouldn't even save scores. They're both bugged, but that's got to be expected in free software.
My vote is definitely for ibP here