I agree with Jeff. I love the KDX and had a couple of them highly modded, but I think you get a better all around package with the Gasgas.
We now have a EC200 in our garage, but I have not had a chance to ride it yet (my son's bike).
As you already know, the Gasgas is the most KDX-like bike out there.
That being said, I have a special place in my heart for KDX's and Jeff's is a very nice ride. It is jetted perfectly and is very fun to ride
One thing to consider is that a guy has to be very patient in getting his hands on a Gasgas 200. Might have to look around the nation and get one shipped as they rarely come up for sale in the NW. Of course you could get a new one from Tasky's or Gran Prix.