Best anime OSTs in my opinion.
And yes I do like all of these anime's, at least I did when I watched em. XD
Anime based on MMORPG setting
dont worry you will love it.!! (may contain movie)
Basically all the anime I thoroughly enjoyed watching-whether it was because of the music, plot, characters, etc.
Every anime I've ever watched ranked from best to worst (excluding unoriginal OVAs/specials and movies; including uncompleted but watched out of order and back story OVAs)