Bad thing is it really comes down to a matter of opinion. Good thing is you can't go wrong with either one.
http://www.hardforum.com/showthread.php?t=883478 has a poll and user comments on some NF4 boards, as do many, many other threads. Just look for which one provides what you need, and pick based on that. My bet is you'll get just about the same amount of votes for either one.
I might add, these are the nF3 boards. Socket 754......will be running a 3400+ on it...
I actually just recieved both, but hated to go thru all the trouble of setting each up and testing. BUT, that may be what I'll have to do..