The voice acting and music in the original are objectively better, sure, but I personally enjoyed the new stuff from MGS2. Easy as it was, it's still not as bad as everyone says it is. And yes, I enjoyed the over the top cutscenes. What would MGS be without over the top ridiculous stuff?
Even though I like the 360 version more, I enjoy having this on the go, and would take this over the Vita version. Sure it has a lower framerate and isn't HD, but I honestly prefer the control scheme, at least on the New 3DS or with a Circle Pad Pro. 4 shoulder buttons are better than 2.
As someone who never really heard about this game up until a couple days before release, I never really had the time to get hyped up over it. The sniping part (obviously) feels really nice and satisfying when you line up shots, complete with sniper elite-esque bullet cams, although minus the x-ray view unfortunately. The story is laughable and the characters are pretty forgettable, but the gameplay makes up for it in part. If you liked using the snipers in Far Cry you'll likely enjoy it, but I would wait for a sale.