Here are my picks:
Mutemath - Not sure if this is a 2007 release but thats when I got it, freaking love this album.
MIKA, Life in Cartoon Motion- Very cool production on this
Matthew Good - Hospital Music - I've always liked what this guy puts out, it may not be the perfectly engineered album but I like it, it has an "aura" to it.
Actually, I think those were the only new albums that I bought this year...everything else was released years ago
My picks for worst: I'll leave this alone...