How about gas?
I'm happy with my KYB gas shocks from Summit.
Do a search on this site and you'll find plenty of reading
about shocks, it's been discussed many times here.
I'm thinking of going with the Bilstein gas shocks from Kirban Performance. I just installed their variable rate rear springs and it corrected the stock height and the car handles a little better.
There's nothing wrong with air shocks. I have them on the rear of my car. They come in handy when alot of people want to cram in and you don't want your tires to scrub or get cut by the inner fender lip.