yeah man, the x38 is wonderful. But unless you want to have to OC your ram to death, I say dont go for the maximus. And I am pretty sure, you cant manually set the fsb:dram ratio for almost all. The quad gt I think is the only one that you can set the ratio. SO just watch out for that.
And I cant wait for these to come out. Maybe if the incentive is enough, I will drop my gts, and get one of the new ones. Then I can crossfire later.