For 80/20 street vs dirt I would take the KLX/DRZ400-SM over my KLR650 any day.
Consider The Mighty DR, Suzuki's DR650. It's bulletproof with a ton of aftermarket support. I put Pro Taper bars, a bash plate, billet levers, Acerbis bark busters, Intiminators, OEM rack, etc, on mine. The Australians do some crazy stuff with them:
https://www.youtube.com/watch?v=sGdLm9sXzdoYou should be able to pick up a nice one for $3000-$3500.