I have the 2004 Riddell Chiefs (high top) and have found them to be very comfortable, and so far very durable. They're pretty reasonably priced, also.
Here's the Honig's link:
http://www.honigs.com/detail.asp?Cat=2&Sub=10&Item=852
You can find the 2003 model even cheaper, but I'm told that the new model is significantly improved, especially in terms of durability.