Thanks for your comments guys. Overall, it seems the general consensus is not far removed from mine. I totally agree that there isn't ONE perfect bike, but if you absolutely
had to choose just ONE bike, to cover as wide a spectrum of riding parameters as possible, the 650 KLR would definitely be a contender.
I actually have the 250 KLR as my "dirt" bike for the local trails. Its great as long as the trip to and from the dirt isn't too far. Compared to the GS, it feels like a mountain bike in weight and agility (and confidence)