I've always been a fan of Yamaha dependability.
Had a 1985 BW200 I rode REALLLLLLY hard and it was mint to the day I sold in 2014:
http://yamaha.itgo.com/
Also drove the piss of out a 2003 Yamaha Kodiak ATV (jumping, power sliding, mudding etc.) and dad still uses it was a plow, stump puller, wagon puller, general round the property vehicle.
So yea.