I've got one, and they overclock quite nicely. Right now I've got it running a 3.105ghz 1.504vcore so far Orthos stable for 7 hours straight. Temps reading from the motherboard diode never peak higher than 46c (brisbanes have a glitch in the on die temp sensors, so I don't trust them, but I would assume them to be about 4-5c higher than the motherboard cpu diode)
considering how cheap this was, and that it clocks so well I'd say it's a good buy. I've got a Xigmatek HDT-s1283 keeping it cool though, a good pairing with this chip since it's cheap, yet very great cooler.