Hi there all My power-lok just failed. Spider gear teeth in the bottom of the diff. With 350 miles on it in 4x4. I am looking at replacing it with something more durable but still streetable. I do drive my rig on the pavement and on packed snowy roads in the winter. I have a Grizzly in the rear and love the performance of it. I liked the power lok when in deep mud, snow and sand or when crawling.but was a chore to drive on packed snowy roads. What locker would be best for all situations and last longer than a few hundred miles??