I got myself a SLK -800 and a 92mm Panaflo 1A (dunon H or L but i think L) and it runs great. Lowered my temps by about 10 degrees from my Volcano 7 and TMD, although my Volcano 7 would probably have done ok.
The SLK-800 is probably more versatile than the Alpha 8045. Easier to install (dun have to remove mobo but it uses all 3 prongs and clip is tight), supports different size fans (60mm, 70mm, 80mm officially, you can rotate the fan and mount a 92mm too if you had to) and great clip design instead of screws to install fan (easier to change out fans and what not, also allows a rotated 92mm to fit). Also, keeping in mind a lot of the newer AMD mobos dun include mounting holes, so if you're planning to upgrade your mobo sometime soon to say a nforce 2, you might be out of luck w/ the Alpha 8045.