The only Co. I have had experiance with is ThermalTake....and after a bit of tweaking and some artic silver III, my Volcano 6+ Cu It has kept my 1900+ nice and cool...around 45-48 C ..... I have heard good things about the Volcano 7 as well.
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Lian-Li PC1100 Plus
DFI-NF4 Ultra-D
A64 3700+ San Diego @2750 1.5Vcore
XFX GeForce 7800GTX
2X WD 74GB Raptors
OCZ PC-4000 VX Gold 4X512
I would go for the Volcano 7 as long as you check it fits on your board. Some boards (like Epox ones ) have capacitors and other stuff around the socket, which limits how big a HSF you can get on it.
I would go for the Volacano 7+ (Plus) .. if you are after top performing HS ..
If the cash is an issue .. then Volcano 7 should do fine ... and will keep your CPU in at a cool temp
HHc-001 CM HS is nice too, but the heat pipes might prevent proper seating (If your chipset fan is close to the socket like in EP 8KHA+ which i own) ....