I think Laura Ingraham is quickly becoming the #2 conservative talk show host in the country. Smart, hip. Speaks off-the-cuff very well, and delivers a pretty consistently good product. She's the Energizer bunny. I think her looks are overrated. Does not make me laugh all that often. Needs to get a better staff and use them effectively.
Sean Hannity doesn't have much to offer. Michael Savage is well worth a listen once in a while.
Bill O'Reilly's underrated because he is a blowhard. Oddly, the left wastes ammo hitting him - he's good at taking their heat. That's good for our side. They don't realize that he's not all that important.