I have the version with the removed USB ports, and it is one of the most stable boards I have ever run. I had 2 1800 MPs in it, but did not have one HSF seated properly. (Fried MP ) I had another non-MP 1800 around that did not have the last L5 cut, and it is working very well with the other MP. So far I am able to run the FSB at 143 with both processors. I am hoping for 150 when I get my waterblocks installed. With the single MP, it ran very well at 150. It is nice to have VCore/FSB/multiplier adjustments on a dual board. I am either going to multiplier unlock the non-MP, or just pick up another MP to use the multiplier adjustment feature.
EDIT: 2cpu.com is a very good site for info....