I think Maryland, Tennessee, and Duke are absolutely going to be #2 seeds. The last spot is between Miami, Delaware, and Kentucky.
Body of work-wise, I think I'd put Miami in as the #2, but none of them have a clear case for it. Prior to Miami's loss to Wake, they would have been a clear #2 seed, but with a weak overall schedule and that bad loss on the resume, I'm now unsure. Hell, Delaware beat Wake if it comes ot that. Of course, Miami beat Maryland.
I'm going to say Kentucky gets it, but they definitely deserve either Miami or Delaware as their #3 seed.