The only guy who made any lasting impression was Jerrod (I think), the winner of Reagan Idol -- the military guy. We'll see.
Anyhoo, those are my early thoughts. I'll keep an update and see if my opinion changes throughout the run. It generally doesn't. The only performer that really grew on me was Diana DeGarmo from the 3rd season. The others I pretty much liked from the early audition.
The one thing I've complained about from day one will likely continue though, I wish that they would spotlight ALL of the singers who make it through to the top 32. Maybe they did this time, but I highly doubt it. Maybe they will though, it will be nice. It's just such an unfair advantage to those performers who got airtime from the get-go.