Big +1 on the Pumas! I've been in the Puma race boots for 4 years now and they are awesome! They're a little difficult to get on and off your foot (gets easier as they break in) but once they're on they're good for the whole day. Super comfortable, good protection, and sold by good dudes (Steve at Mad-Moto, and Snug Harbor Motorsports). And if you happen to need parts or hardware at the track Steve or I got it covered.
carl