U-joint tools

[gonz]

I've used the old hammer and socket method and a vice. Has anyone used one of the specialty tools? I think I remember seeing one being mentioned in either JP or Petersons, but I can't remember when. My truck has the tendency to eat u-joints, so if the tool works, it would be nice to have on the trail- thankfully they have always gone out on a paved road. Thanks for any info!!-gonz
P.S. I am going to replace the axles in the future, so I don't want to spend a lot of time or effort in trying to fix the problem right now, but would rather change out u-joints.