Well I own Chronicle, and the nice thing about it is that you basically get the whole series thrown onto one disc. I've never played Savior, but I figure you can get more bang for your buck if you buy Chronicle.
Chronicle has no endings, but Savior does..... Hell, get both. The endings are well worth it, and you can put it in English <IMG SRC="smilies/biggrin.gif" border="0">
Chronicle uses the Vampire Savior 2 ending. Both games a great but Chronicle's only flaw is that Dark Gallon isn't selectable (Though his victory track is in the sound mode.).
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"Don't be scared! I'll only cut off one of your heads! Guess!"