Yeah i have they sold me my electric fan and yes i would recommend them they are very prompt and responsible. They are actually the guys that run this board too. I plan on getting my accessory pulleys and the gates belt from them also as soon as i get my money to play with in a bit.
jeff at suprasport.com is a great guy. He has a daytime job in addition to the site(thats why there is no tel #). he has great prices and is very reliable. if you want it he can get it for you.
p.s. i have bought a few fpoducts from him.