I have a Powertrax no-slip and would buy it again.
I have a 4.OL 4x4 with a 8.8 28 spline axle and the powertrax no-slip and think itís the best for the money. I will admit that if I had the money I would have gotten an Arb air locker for the ability to leave it completely open on the highway & have an air compressor. Towing with it will be no problem, probably even better on a boat ramp(watch the video on the powertrax website), I havenít towed with mine but it will plant all the power if your tires will take it. I cant say about mileage loss because I put bigger tires on at the same time so I did loose 1-2 mpg, but went over an inch bigger on tire as well. The powertrax is very streetable, I drive it everyday, it does click (I donít notice it unless I listen of it) on turns and will squeal one tire if you are floored when it locks. You will notice its performance more off road, I have to use 4wd a lot less in sand. I much prefer it over the stock limited slip, which never completely stops spinning one tire.