I've been using Fuji media for a while now and my PS2 has started to have problems loading games. I'm not sure if it's the laser or the fact that I've switched from the individually-wrapped 10 packs of Fuji media to the 50-disc spindle. Games will load after a few tries, but sometimes I experience skipping during FMVs (which is happenning occassionally in FFX-2). I'm debating whether or not to send out my PS2 for a laser head replacement/cleaning/alignment (at NEWAGE) or not.
Just so you know, I have a V3 PS2 with a Magc 2 chip.