I'm looking for private trackers that have plenty of PS3 games.
I also want it to be fairly easy to keep a good ratio.

Right now I find PS3 games on IPTorrents and FileList.
I belong to bitGAMER, but cannot seed without a VPN, and do not have a VPN any more.
I'm not interested in GazelleGames because it's difficult to maintain a good ratio.

I'm on the lookout for nCore, UltimateGamer, and PlayBits.
Are those good choices for PS3 games, and which other trackers should I look for?