I was really hoping for another tire thread.
What information do you think is out there that hasn't been discussed to death already?
No tire is going to affect your gas mileage in any significant way. But they do wear at different rates. If you don't want the Sport Demons, that leaves the BT-45's, and GT-501's as top all-around choices. If you want to experiment with larger tires, consider the BT-016's. If you're taking it on track, some people prefer the BT-003RS's.
Carry on.