I feel torn because of this. My gf and I bought a PSP 8 months ago and I have yet to play a game on it. MGS: Peace Walker was basically the only game I'm really interested in, and I was within DAYS of playing it. But ya know what? The PSP control stick HURTS, and the handheld just feels awkward (especially compared to my new 3DS). So now I may have to wait it out and get it for 360... play it on a big boy system, like it was always meant to be.
I'd also love to play MGS2 again, and in HD. I really have great memories of that game. MGS3 I was never all that interested in... Boss's endless bullshit started to wear on me after awhile, and the jungle got kind of repetitive. But Peace Walker and MGS2 HD? HELL YEAH!