Kingdom Hearts 2.5 recently got a price drop on amazon to $20. I'm thinking about picking it up but need some help to decide if I should. I've played Kingdom Hearts 2 already before on ps2 and I loved it one of my favorite games of all time, and I've played BBS on the PSP already. I still have KH2 and my PS2 as well. I'm thinking about revisiting the game and playing it again, should I get the HD collection? Or just hook up my PS2 and play it again on that.