Speaking of SotN above, how's the PSP Dracula X chronicles? Worth the $15?
A friend got me this on PSP as a gift, and I loved it. But NOT for SOTN (Already have it on PS1, and XBLA), but because I FINALLY could play Rondo of Blood for the first time! (Was debating getting it on Wii VS forever. Have drooled over the near unobtainable game for years before that...)
The original game (also on this disk) is great, and is a nice mix of SOTN's eventual, more robust Castlevania, and more old school, straight forward, NES-style Belmont-beatings. The Spritework of the game is great (and the first place many of these sprites would be created, to be re-used OVER AND OVER in SOTN, and the Gameboy games), the music is CD quality Redbook audio (thanks to the PCE system), and the 3D remake itself is a great parallel to the original game. I found it much more competent than many other Re-Makes (Maybe not as good as Bionic Commando Rearmed, but much better than the Rocket Knight downloadable), and exploring the differences was worthwhile and fun.
The trend of including the original and remake together should be followed more, it's worth getting just to support that!