I have the P5N32 SLI PLUS and love it. It has been stable as a rock and overclocks great. Some people did have some problems using 4 gigs of ram when using all 4 dimm slots but it appears to be fixed in the new 801 Bios which so far is getting a lot of praise on the asus boards on that bios.
I'm very happy with it.
Also the new bios 801 adds support for the new upcoming intel cpu's