The Symphony of the Night ost is an absolute masterpiece, I agree. As Crisis says, 'Dracula's Castle' is a wonderful, omninous track which immediately tells you that this is Castlevania you are entering, with supernatural dangers, heroicism, and at the end of it, Dracula. However, I must admit that for me personally, SotN has a rival, in the form of the LoS2 ost. You might hate me for this, guys. While LoS was a mixture of near perfection in places and disappointment in other aspects, the soundtrack was one of the game's greatest strengths. In particular, the original E3 cinematic trailer score is my favourite piece from LoS2. It has that build-up, like with 'Dracula's Castle', which speaks of Gabriel's sadness, weariness, and immortality, before rising into his vengeful anger and wrath being unleashed upon his enemies, striking them down with the blood whip shadow of the Vampire Killer. It's a deep well of emotion in places. My main criticism is that there wasn't more of it, and that the cinematic trailer song wasn't in the game.
[Official] Castlevania: Lords of Shadow 2 E3 2012 Trailer [HD]Also worth mentioning I think is some of the Akumajou Dracula Pachislot osts, especially III, even though they're not
proper Castlevania games in the strictest sense, much as Judgement isn't really imo. 'Treizire de Spirit' and 'De-a Lungul Vieii' in particular stand out from that.