If you have no use for youngish characters, then hold of on the teens and get David. He's generally superior in little details that were not as effectively done in M3, and he's distinct enough that he's very usable. He accepts a great many of the morphs packs available as well, so that's always helpful, too. His texture maps are decent.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)