Yeah. I hear good things about the week27 e6600s in particular. Apparantly they don't totally suck, which is a nice change in pace. Would like to have a reason to spend that extra $100.
Im running a near silent pc with a E6400 week 626 @ 3440Mhz, 1.385 Volts rock solid stable with a Thermalright Ultra-120. It maintains an Idle temps around 39C - It could easily go higher.