HI i bought an Edge last December but first towed with it last week. I've got the 210ps with the power shift gearbox and have been very pleased with it. I chopped in a Honda Cr-v (I'd previously had 3 others) and find the Edge far more comfortable, quieter but a little thirstier.
I't still only got a little over 3k on the clock so I'm confident this will improve a little but currently I'm averaging 38mpg to and fro work, 42mpg on a solo run involving some motorway and towing between 50 & 60mph (50 through rather extensive roadworks) it averaged 25mpg.
Definitely more stable than the Cr-v (which was pretty good anyway) when towing but haven't had reason to see if the 4 wheel drive can get me off a soggy uphill grass pitch, which the Cr-v did, but as the drive train is so similar to the Kuga and they cope well I'm sure it will be adequate.
Initially it seemed to have a significantly bigger presence on the road but I think that's a bit of an optical illusion caused by a higher bonnet line as it has seemed to shrink a bit as I've got more used to it.