Join Date: Feb 2009
Location: SF Bay Area -- Silicon Valley
First off, don't let any body sell you a suit that's "cooler" than another. Because the point of a fireproof suit is to insulate, and that goes both ways -- outside flames won't burn you, and your body heat ain't getting out either. I've had $300 mail order suits and $1000 shiny Sparco and they both get hot. One just "looks" cooler than the other.
The best thing I bought was a suit cooler -- basically a shirt with 50' of tubing stitched in, connected to an ice chest. It pumps cold water and makes it bearable until the ice all melts in 30 minutes.
As far as comfort goes, once you are in your Nomex underwear and suit, balaclava, gloves, HANS, helmet, ear plugs in, visor down and cinched into the 6 point harness, and connected to your suit cooler and radio... there is no comfort. Forget scratching your itchy scalp !
So, pick a flame rating that suits your needs and buy one that you don't mind being seen in.