The one (series) to rule them all
I'm a fan of DMC, but I still haven't beaten 3. Big fan of PoP, too, but still haven't beaten 2 or 3. Onimusha is my favorite series, based upon so many factors. Graphics, story, characters, enemies, weapons, powers.....the list goes on forever.
If you haven't tried the series out yet, I suggest you do. I recommend starting with this one, although 2 is my favorite. Play it through, and I think you'll be pleasantly surprised. You can probably get the entire series used for about 35.00 or less nowadays. Enjoy!
-B