I know this has come up so many times and I know there is the poll to see what heatsink people are using. I was looking at getting the ALPHA PAL8045. No where seems to have them in stock so I'm looking for a second hand one see For sale/wanted forum. What other options do I have? I want to over clock it and hopefully get up to xp3200 speeds. theres the Thermalright SLK-800A and the Thermalright SLK-900A but I don't really have £30 to spend on a heatsink so maybe second hand? Where would you suggest looking? Would you even suggest trying second hand?