The problem with Nathan is he is going to cost a ton. If you are going to spend that much on a closer, then why not just resign CoCo? Neshek seems fairly close to untouchable as well, though with his recent arm problems he's a bit of a risk to boot. I like the idea of going after Crain, as he's on target to be ready for Spring Training, and shouldn't require us to trade a boatload of talent in return. But if we want to trade Hall, and the Twins seem like a great place to send him, I'd go after Perkins rather then Nathan.