Haren is the only one I'd even remotely consider, and I don't really want him just yet. I do see Haren with a fairly bright future, though.
Saarloos is more suited for long relief. Very nice outing tonight, but his stuff is just okay, and he's hardly overpowering. Gets by on smarts, but when he's off, he'll get blasted.
Blanton...well, I've said for two years he's more hype than substance, and we'll see soon if I'm right or not.