I'm with XrWolf.
All us XRnuts have spend a lot of time and money to refine our "base-machines" into a bike uniquely suited to our personal and riding preferences.
As enamored as I am with several new bikes, I don't think any new "base-machine" will cut it for me; most would require a lot of mods, short of maybe the KTMs.
I also like the simplicity, relaibility and friendly maintenance design of the XR, which gets compromised in maker's quest to improve performance, especially with track bikes.
As an all-around woods, trails, & desert bike, with a lot of aftermarket goodies to tailor performance, they're hard to beat
I'll be the first to admit there's owner's bias.