Week/Batch numbers and highest stable overclocks for Core 2 Duo

[Kantana]

Pls submit your highest stable overclocks with the model processors, the batch numbers, Vcore used, motherboard used, cooling used and highest temps. Trying to consolidate into a table so that we can see if particular batches/weeks do particularly well. Will help those trying to buy a good overclocker.
Let me start with 2 of mine.

Intel E6400
Batch L624A768
Asus P5W DH
3.5G dual prime stable (438FSB)
1.5 Vcore
Corsair Cool water cooling
57 degrees C

Intel E6600
Batch L623A550
Asus P5W DH
3.6G dual prime stable (400FSB)
1.5375 Vcore
Corsair Cool water cooling
61 degrees C

Just changed the Corsair Cool water as the reservoir developed a leak. Didn't have any high powered heatsinks around so went down to the local computer center and picked up a Tuniq Tower 120. Spent 2 hours removing the water cooler and fitting the Tuniq, took a long time!

Anyway started up the system and got some new figures, used the E6600 and left all previous settings alone and noticed that the temps had dropped! Using the huge Tuniq Tower 120 dropped the temps compared to a water cooler, couldn't believe it. The system is still dual priming right now after 90 mins, readings are:

Intel E6600
Batch L623A550
Asus P5W DH
3.6G dual prime stable (400FSB)
1.5375 Vcore
Tuniq Tower 120 on high
55 degrees C

Gives me hope that I can reach for higher overclocks with lower temps and if I reach a thermal wall again I'll just switch to a faster fan in the Tuniq Tower.
Anyone know any better heat sinks than the Tuniq Tower? Thermalright Ultra 120?