My first Sony system - the PSP

[GooseGaws]

okr said:

I already have Dawn of Sorrow on DS. At the moment I don't plan to buy another Castlevania, but if, it will be either Portrait of Ruin or Order of Ecclesia.

On PSP I rather want games from franchises which I've never played before.

I see.  I assume you haven't played Symphony of the Night, though, which is included in full as an unlockable in Dracula X Chronicles and is perhaps the best title in the series.  All I'm saying is, if you see it on the cheap, consider it. 

If you like puzzle games, you might also check out Crush and Echochrome.

EDIT:  Also, if you like rhythm-action games, I highly recommend Gitaroo Man Lives!