Medved might very well be the smartest conservative talk show host I have come across. I find Hannity to have the best guests, but he lacks a little upstairs. Rush is a little to full of himself for me. One to watch is coming out of Pittsburgh-- Quinn in the morning. He's got a nice show and its growing steadily.
I listen to Quinn, Rush, Hannity, and Savage. I think that Quinn is the best of these. I find Rush's talking off mike to be extremely rude and obnoxious. Hannity seems to spend all his time telling me how great he is. Savage, when he's sane, is good; he spends a lot of time, though, being angry (and possibly nuts).
Hedgecock and Medved are good, but I don't hear them very often. I'm not very impressed with Michael Reagan; perhaps he's a bright star which is dimmed by comparison with others.