I've never really given them a shot. I dunno why. They've always been overshadowed by the Dark angels in my eyes. I prefer their story, and I love the deathwing. I don't really know much about Blood angels. The sanguinary guard seem cool. But I don't like their massive nipples...
I think because of my lack of knowledge I'm more drawn towards grey knights. I hear their formation is pretty good. Like the old Daemons they can deep strike from turn one. Don't they have a unit of flamers too? How good are they?