Been using it for about three weeks now. Its a vast improvement over what they had but still far short of Adwords in terms of usability.
WARNING! one thing to watch out for is when they port over all your old stuff, into the new system there’s all sorts of things that don't flow well. One of the biggest we found were bids for the content match instead of being like 10 cents a click came over at $2.00 a click. Also all the groupings for the different campaigns came over with weird names.
Again, much better but still a little challenging to use.