Google Image Result for http://img264.imageshack.us/img264/4585/1174980255w0uioinw7z11lqk0.jpg Thermalright IFX-14 CPU Cooler its pretty much a better version on the Thermaltake's sonic tower. Granted its massive and can hold two 140mm!!! fans, and is very expensive, but this thing is crazy. That and it has an additional cooler for the backside of the mainboard.
I don't have any specifics, but a lot of the high-end air coolers are at least comparable with the low-end kits, which start close to $100, where as these high-end air-beasts might fetch $60-70 with fan.
Yeah, but to be honest, i don't think i'd want to buy a "cheap" water-cooling system, if i was going to do something like that, i wouldn't want to go half way with it. On a side note, air cooling is crazy, and its amazing how some units get close to water-cooling specs. Yeah, i thought those thermoelectric coolers coolers were going to be pretty sweet, but most of they don't really perform well enough to constitute the price.
I would be scared to put that monster on my rig, i know it doesn't weigh a lot but by looking at it you would think it does and that if you fixed it on your CPU chip and mobo that it would rip it off lol Plus you would need a dam big case to fit that in. :chk: