You guys have covered a lot of what I thought:
VAMPIRATES! Loved that; laughed like a drain. (Because I would have said that, too.)
I am finding Benny more compelling as a character than I thought he would be. We shall see.
I like the Purgatory scenes; Dean fighting like a mofo, covered in sexy blood and dirt, Cas being snarky and hot ("I am not your aunt!" BWAH!) -- SEXY HAWT BACKSTORY.
One thing: Why the FUCK was Sam YELLING LOUDLY over the phone at Dean while Dean made it clear he was on a hunt in a nest of vamps? Curse his ass quietly and vehemently, sure, but Jesus, dude.
I get Sam's desire for a normal life, I really, really do. But one, he a motherfuckin' Winchester. Does he really think that the Bads of the world will just say "Bygones" and he'll never have to deal with it?
I mean, all female relationships the boys have been in, serious ones, not fuckathons (we don't know what happens with Amelia, and I'm curious, because SOMETHING had to cause him to leave her, and it SEEMS that he still likes/loves her...unless he's just being nostalgic about the good times. Or lied to Dean about not looking for him) have NOT ENDED WELL. The women/families were killed, had to be killed (werewolf girl, whatsherface Dean killed), or were kidnapped, possessed, stabbed and memory-erased.
I'm not saying Sam could never stop roaming cross-country and find a more stable existence, but he's not going to be able to ever leave his guard down, and if he ever truly commits to a woman, for fuck's sake he's going to have to be honest with her about the monster's and train her, if she's not already a woman with some of those skills. It's really irresponsible otherwise.
And Dean. Dean doesn't WANT that "normal" life as much anymore after Lisa and Ben; he sees the pitfalls more clearly. I think we're seeing Benny set up as a comparison to Sam; could Dean have a partner-hunter who's not Sam? Will Sam make this argument? But Sam and Dean have too much history; they're brothers.
Unless, secretly, in his heart of hearts, Sam was a little relieved that Dean was "gone." Still sad, still missed his brother, but maybe he thought without Dean, I can have "normal" finally.
I'm very curious to see what happened to Cas, what will be revealed about Sam's year, and what goes down with Dean and Benny.
(And I also loved Sam's slow, subtle reach for the knife, and Dean slight head shake. BOYS!)