Been using the Aquagate Max for quite some time now, down to cooling just the CPU at the moment, was using a Glacier 600 on my 2900XT but have a Palit 4580 that has the zerotherm cooler on it.
Athlon 64 X2 3800+ @ 2.7GHz (never goes above 40 degrees under load)
ASUS A8R-32 MVP Deluxe (Skt 939), 2 GB G.Skill PC3200 @ 446Mhz
Palit HD4850 PCS+ (may look at including this in the loop in my next build, and might get another one for crossfire).
2 x 160GB, 1 x 120GB, 2 x 320GB WD HDD's (3 different OS's and running out of storage, might need a couple of 1TB drives to replace the 320's!)
Thermaltake Armour case (took some serious working out how to fit the Aquagate MAX in, but managed to get there in the end!) - going to get a Cosmos S for next build.
OCZ GameXtreme 750W PSU - looking at the CM M1000 to replace this.
Creative X-Fi Elite Pro.
Oh and nearly forgot - Cooler Master Aquagate MAX!.
Will be upgrading sometime soon to a Phenom II set-up, just got to make sure the bank account agrees!