I'm getting an E6300.
BTW I'm getting an Asus P5W DH Deluxe (probably the best mobo out to OC a Conroe)
It is a good board for ocing a Conroe.
But you have an Allendale - and for them, the Gigabyte DS3 and DS4 is better.
Check xtremesystems, you'll see many hit 450+ with that board; the highest (though absolutely unstable) was 535
x4=2140 MHz FSB