I'm torn. It is perhaps better than the original, but the OG X had a far better ending (I have not, however, beaten it on hard mode yet) and I liked the graphical style better. They moved around the armor set a bit (still in the same stages, just different armor and locale), updated the graphics to 3D (X being that animated was somewhat odd) and added more dialog between X and the bosses before each fight. Which is cool, since it's actually voiced. And again, X is not voiced by a little girl this time.

Spoiler:
Violence is 'bot on 'bot, so no blood (or even oil) though there are a few dismemberments and explosions. No real spiritual or moral issues (X is actually a Maverick Hunter, the special police force created to combat rogue reploids) and the few curses not present in the English version (but oddly are in the X Collection version. I assume it was the Japanese version. Maaaaaan I love the 90's) were not included in this version.
High recommendation from me, if it is worth anything. Only $5 from the PS store.
I can't give a difficulty rating. I've been playing this game since I was 6. :\