I Do
I put a Retrax on my latest truck.
I compared it to the Roll n Lock. The Retax
is one piece not slats like RnL. I have had no problems. The customer service was great, I did my own install. I have not had the lock tested by theives yet. Its been good in cold and ice. I washed and waxed it like the rest of the truck. I have the cut out rails.
Are you looking to put it on yourself?
I know of a place you could probably save a few $$. PM me if you have any questions.
RichR
P. S. Also get the lock cover to keep out snow,ice and moisture!
(added later)