I own a 60gb ps3.
Because my ps2 collection is not very good (I was poor that generation) I have barely used the ps2 BC. I use the ps1 BC far more often as I have a nice collection of games (ps1 BC is in every single ps3). In fact the only times I have used the ps2 BC is to finish my playthrough of ffXII and play through the entirety of the mgs series prior to mgs4s release.
so my vote is for does not matter.








