The KLR 650 has proven to be a fairly reliable bike, within reason. There are a few areas where the KLR has to be watched and inspected in regard to "wire rub through" issues. A bare wire can short out and leave you stranded in the road. A bit of preventive forethought, a small amount of money, and some time can render this situation to no longer be a problem. Aside from that and the occasional balancer shaft bearing coming apart they are a pretty reliable vehicle.
I have been enjoying mine for a good while now and can say it isn't a sport bike but it can carve through the canyons pretty well. And it can go off road if need be. It's heavy (420# dry) and tall, so parking lot tumbles are not unknown to happen. Hey, it's a motorcycle and it goes. Just wait until I get my Vision done . . . . . . . . . . :D