Asus' P2B made the top of my recommendation's list due to a good combination of very good compatibility, a decent list of features and very good performance. The board could be even better if the CPU settings could be adjusted from the BIOS setup menu or at least via dip switches. Jumpers are really getting out of fashion, even Intel uses a software approach. The P2B is unfortunately equipped with only 3 DIMM sockets, which is the other critique I have.
I recommend the P2B as a well performing 'low trouble' solution. If you fancy onboard U2W SCSI or LAN or both you don't have to look far as well, because boards with these features are available from Asus as well. I have already received the P2B -LS, a single board monster with U2W SCSI, Intel 100/10 MBit ethernet onboard and four instead of three DIMM sockets. I will test this board as soon as I'm back from Taiwan.