[quote name='poiuiu']flipcyde: Unfortunately, with most PS2 > USB adapters there is always the case of lag, something that is far more apparent in twitch shooters, fighters, music games or games that require special controllers like Bamani or Guitar Hero. For general gaming, just about any adapter should do.[/quote]
I'm actually pretty happy with the TAC one I picked up. I didn't notice any lag while playing Ghost Recon Advanced Warfighter 2, though I haven't tried any fighters. And it's specially made for Guitar Hero lol (though only the PS3 version of GHIII...and the PS2 GHI when played on the PS3 for some reason lol) and works perfectly, except for a slight lag in activating star power.