133mhz FSB IS WEAK.
thermalright ownz you all.
the swiftech is supposed to be a good piece, but it's not cheap.
if i were going to buy one, i'd buy the xP-120 for p4, because its a fuckload lighter than a comparable copper unit.
the sp-94 is a great sink too, but very heavy, and the AMD guys have to make sure to have the holes in their mobos.
if you aren't trying to get crazy, Fry's has a pretty decent little socket -A cooler for 25-30$, and it's the ONLY cooler there for any platform that is worth buying.