Ive heard that the <A HREF="http://www.thermaltake.com/products/orbMenu.htm" target="_new">Thermaltake Orbs</A> are crap, and that the best cooling thingy out there is the Alpha 8045... what are your views? Im looking at a Athlon 2100+ or 2200+. Also, whats the differnece between a heatsink and fan?