Need new motherboard suggestions.  I built a new rig with:
 
MSI P7N SLI Platinum
Intel E8400
Arctic Cooling Freezer Pro 7
4x 1GB Crucial Ballistix Tracer DDR2-800
150GB WD Raptor X
LITE-ON 20X DVD±R SATA (LH-20A1L-06)
2x eVGA 8800GT 512MB Superclocked Edition (SLI)
Corsair HX620W PSU
 
I had a lot of problems with the P7N and just RMA'd it.  I'd really appreciate suggestions on the best motherboard for this setup with an eye towards stability and mild to moderate OC in the $100-$200 range.  I'm also thinking of getting the new Armor+ MX case; it looks like it has most of the good features and appearance of the Armor+ in a more reasonable size.  I'm thinking it should have pretty good airflow.
 
Thanks.

The ASUS P5K-E is an excellent motherboard, with wide precise OCing options. It also is known to OC speeds beyond 500MHz FSB, but you'll be lucky enough with 500MHz.
 
Problem is, it has only 1 PCI-e slot. Any SLIing will only be done with Nvidia's mobos, which all doesn't match very well with Intel. The 790i from XFX isn't too shabby, but any 7xxi boards aren't very good.