I'm going to have to respectfully disagree on this one. I happen to like Verne Lundquist and Blackledge. VL got excited quite often during our big plays. I don't think VL was/is as good as Sean McDonough was, but I think they do a nice job.
As for Eli, he isn't very good at all. I hate to admit that because he seems like a great guy. Same with Tom Roberts. Seems like a super nice guy but I absolutely can't stand his awshucks approach. I feel like throwing something at the Jumbotron when his weasely voice comes on narrating those flashback plays from the past. He speaks to his audience and ask questions to players as if he was talking to a room full of 4 year olds. Eli, on the other hand, has a better voice but is horrible at giving you the specifics of what is going on. If you aren't watching the game on TV, you have no clue as to the down and distance is. He also gets overly dramatic about relatively minor plays. Here is an example of what I'm talking about. It usually goes something like this. "The give to Hudson, HUGE HOLE!!....and Hudson picks up 2 yards on the play." He will also say the player gained about 6 yards and the next thing you hear him say is second down and 7. He calls the game as if everyone over the radio waves can see exactly what he sees and that as long as he is within a few yards of the play everything is cool. Hate to admit it, but we have one of the worst football broadcasts in the SEC. Our basketball announcers, on the other hand, are very good.