I just got a Sony Hdd (as a gift from the gf), and installed it, formatted it etc using HDLoader. Now I AM seeing a huge decrease in loading times, but... I read that the Sony HDD is only 3400 rpm, falling far behind standard 5200 rpm drives (not to mention 7200 and 10'000) Is the PS2's bus speed the bottleneck in the system, being the reason for Sony's 3400 rpm drive, or did they just decide to cheep out? Has anyone experimented with various drives and drive-speeds? Thanks for the feedback.