http://www.frostytech.com/articleview.cfm?articleid=2271&page=4
From the latest results of Frosty's, the Therlaright Ultra 120 beat all by a few degress, but the thing is pricey. Realize though the results of those HSFs that the fan is on high. Both the Xigamatek 1283 and Sunbeam Core Contact, with Direct Touch Pipe technology can be had for really good bedguet prices.
XIGMATEK HDT-S1283 120mm Rifle CPU Cooler - Retail
Sunbeam CR-CCTF 120mm "Core Contact Freezer" CPU Cooler
I personally always end up getting the Xigmaek HD1283 because it's a bit higher underneath and doesn't get in the way of close memory slots. Allot of folks like the Zalman's , but IDK, the results just aren't there anymore, and they haven't gone down any. They do have a faithful following with OCing. I got a Xigmatek 120 on both the 9950BE and E8500 and it's doing a great job. I'd posit getting that one.
Penewah!
#1:MSI K9A2 790FX/AMD Phenom 9950BE125w OC 3.12/Xiggie120/Antec1200/OCZ 2X2Gb Reapers PC2 8500/HD4870 1GB ASUS/F1 Spinpoint 640GB&320GB-SATA/PCPC 750W CF Silencer/ LITE-ON & ASUS DVD±R/Vista 64-bit & XP/Dual 22" HannaG Mons/ WD My Book 500GB/Logitech X-530 70 watts RMS 5.1 Black Speaker System /#2:Biostar 780G/AMD 6000+x2/OCZ PlatRev2 2x1GB DDR2800 /Logysis-Acrylic/Vista/Ubuntu 8.1 / Corsair 550W PSU/#3:E8500/Gigabyte P45/HD4850/Xiggie 120/OCZ StlhStrm 700W, CM HAF /mushkinBlack/ Lansing FX4021s