I'm surprised you enjoyed the music at all. That's one of the main things some Castlevania fans have been bitching about in regards to the LoSverse.
I liked the story, I didn't mind the gameplay, I enjoyed the music, and the designs/art direction I found real good. While people were bitching about how it's "not Castlevania" I was seeing plenty of Castlevania. (the first LoS I mean) people got hung up on the smallest things. But I suppose that comes with the territory.
I didn't care about the TWEEST at the end of the first where Gabe becomes Dracula (ehem- pardon- I mean Dracul) it reminded me of the Coppola film. (which Lament of Innocence also took as inspiration for Dracula's origins) The idea of a Belmont becoming Dracula does sound weird, but i didn't mind. I'm willing to look at the series as a different interpretation of the source material franchise. It's only a 3 part series too, so it's not like LoS will stay forever. from the start, Cox has stated he does not want to be "Mr. Castlevania" like IGA was. (and it's not the first time Dracula was related to the Belmonts- Legends on the Gameboy made Dracula Tevor's grandfather by making him Alucar and Sonia's son. And then there was a manga or novel i think, where Simon was Dracula's son, and a Dhampir, so...)
Plus, about some time while AoS/DoS were still fresh in recent memory, I thought, "Hm, wouldn't it be cool if there was a game where you played as Dracula instead of the Belmont?" And well, Mercurysteam delivered.
As far as the original LoS goes, I liked it's gameplay. i found it leagues better than GoW. It actually punishes you for nonstop spamming. you HAVE to learn to use your combos and skills, and block or dodge. And the combos were pretty fun. the gameplay actually reminded me more of LoI than GoW. I mean of course it plays differently and the whip handles differently, but what was LoI aside from a dungeon crawler beat em up? (with far clunkier controls as far as the whip was concerned) it controlled good, the atmosphere and scenery was gorgeous, the vampire castle in particular OOZED with Castlevania feel, the level progression was basically classicvania in 2D, gabriel's outfit is basically Simon's garb from CV2, (if you put in the Konami Code, you even get a little CV2 Simon sprite under one of your magic bars that mimics your actions)
TL;DR, I can appreciate it as MS' own artistic interpretation, and I enjoyed it for what it was in that respect.
I have not played the 3DS game because of my lack of a 3DS, but it didn't seem nearly as good. The atmosphere was alright, basically take the land of the vampires part of LoS and make that the entire setting, the gameplay though was LoS in 2D, and it did NOT seem to work very well at all. But then i didn't play it so i can't really judge. The story for MoF was alright, it's a decent tie between LoS and LoS2, the Alucard = Trevor twist did not bother me as much as I expected it to, (I just rolled with it and figured eh, why the [tornado fang] not) probably because Trevor's ending plays it real smooth. Trevor's ending in general was the highlight of MoF. The gimmick of telling the story backwards however, was real stupid and the order could have been played normally while still keeping the totally spoiler Trevor ending, or at least, the Alucard part, out till the end. I've heard that the FPS on MoF is not too great, and MS says they first developed the game in HD console quality and scaled it down for the 3DS, which to me just sounds like they were asking for trouble.
As far as LoS2, We actually get to play as Dracula. That's [tornado fang]ing awesome. The gameplay seems to be a slight bit different than LoS or MoF, since Dracula has a sword along with his blood whip. he also has all those nifty vampire powers that come with being a vampire. The grandness and scale of the trailers really gets me for LoS2. plus the fact that this Dracula actually gets his hands dirty. THIS is the kind of Dracula I like. he gets all up in the front lines and starts [tornado fang]ing [parasitic bomb] up, he doesn't sit in his throne room drinking from a goblet hoping a curry throwing skeleton can kill the protagonist. The IGA games really turned Dracula into a chew toy. (and his reasoning for becoming a vampire was silly and immature at best.) Almost anyone besides the Belmonts could defeat him. It was sad. This one kicks more ass and actually has a bit more depth to him. The most IGA ever got was Symphony, where Dracula actually seems to regret his actions when he learns of Lisa's last words. he seemed quite ready to move on, buuuut next game, no mention of that at all, he's all back and bad and [parasitic bomb]. which is the price to pay for a villain who's story revolves around the powers of malice and chaos, where he resurrects when people's faith is at it's lowest and [parasitic bomb] like that.
In short, I never minded the LoS series, I liked it, and I think it's just the booster shot the franchise needed to avoid going the way of Mega Man. (Which it was slowly but surely going with recent games)
EDIT: that said, I can still point out some flaws with LoS, so it's not like I'm just mindlessly praising it. For one, the QTE's in LoS were completely unnecessary. And the Titan fights, while well done and really epic in scale, really were very blatantly Colossi from Shadow of the Colossus.