I have owned 4 DR650's and few years back bought a DRZ400 and honestly preferred it over the DR650. Same basic electronics as the DR650 but lighter, more nimble and was able to install a kick starter kit in conjunction with the factory electric start to make it the ultimate doomsday machine. Both are as reliable as anvils and almost as simple.
An apt description. For the financially challenge, a jet kit and a Seat Concepts seat cover are pretty good band-aids.
All motorcyclists should at least test ride both a DR650 & a DRZ400. They are surprisingly underrated.
Both are versatile, but somewhat different beasts. The mid range torque of the DR make it a more fun street bike. But in the dirt, there is often too much torque available. The lighter weight and better suspension of the DRZ make it the superior bike for off-road.
Depending upon usage of course, either bike is a jack-of-all-trades choice for owning if the situation is "I can only own one motorcycle."
Peter Egan summed it up well many moons ago:
https://magazine.cycleworld.com/article/2002/10/01/a-tale-of-two-suzukis