My team uses a version of this altho to my knowlage ours was out before the quickstrip. But the ones we have are klein brand strippers, and actually have different notches for the differing size wire, they work great and even have an ajustable stop so you can strip the same amount every time. I guarentee that they cost more than the quickstrip type, but I have seen a pair used nearly every day for years and never had a problem.
Klein Stripper