philips and every single brand have bad discs as well as good discs (already said that)
Verbatims is what I would use but I make sure they are good ones, not the poor quality ones
DVD+R is what I recommend if your PS2 can read them, not all versions of the PS2 can, it is mostly the old bulky PS2's that can't and this is only because they had been released before the DVD+R media had been
DVD+R in general is a higher quality disc than any DVD-R (already said that as well)