Jereag, I am doing exactly what you describe. I'm overclocking my Q6600 @ 3Ghz with stock voltage settings. I'm using the Scythe Infinity and absolutely LOVE it. It's extremely quiet and my CPU idles at 38-39C. After gaming for an hour, it runs at like 52-53C. I'm running a dual fan setup. I've got a SilverStone FM121 fan blowing into it and the stock Scythe fan sucking out of it. I know the screenshot says that I'm running at 3.2Ghz but I couldn't get some benches to pass so I just decided to run it at 3.0 instead of fiddling with voltages and it's stable as can be. Also, I got the Infinity from Directron for $39 which was a STEAL. Check out some pics...
http://img.photobucket.com/albums/v7.../PCGear011.jpg
http://img.photobucket.com/albums/v7.../PCGear012.jpg
http://img.photobucket.com/albums/v7.../PCGear013.jpg
http://img.photobucket.com/albums/v7.../OC3.2GhzC.png