I would like to replace my PS3's internal HDD with a bigger one. I'm particularly interested in Hitachi Travelstar 5K750 640 GB model and I would like to know if there's any issue with this kind of change. The drive is of course at 2,5 inches and on its official page (on the link above), it says it can be used for gaming consoles too. So, is there anything I should be afraid of? Second choice would be Western Digital Scorpio Blue 640 GB (WD6400BPVT).