I'm leaning towards the ASUS right now, although there isn't any hurry, I won't be making the mobo swap until January at the earliest.
There are two reason 1) My current P35 is a gigabyte and although it OC'd well I can't, for the life of me, get it to both fold and download azereus at the same time on my 9800gtx without eventually BSODing, for some reason 1 out of every 3 days it just starts going bezerk and BSODing cyclically all day long until eventually it un-installs the 9800gtx and I have to wipe the drivers and re-install them from scratch...then usually good for a few days and starts over. Have tried everything under the moon to fix this but it just does't want to cooperate.
Anyways, as my in-laws couldn't care less about games, folding or OCing the P35 will be great for them and I'm free to upgrade.
2nd reason is that it has the third PCI-e slot, there is a good chance this board will find it's end as a folding rig in a couple of years so an extra slot is a bonus. Will the x4 slot affect folding performance vs an x8 or x16 slot?
[edit]Ok, decided that it isn't the time for DDR3 so the gigabyte is off the page now. Other options: