Truxedo Sentry. It's a hard rollup cover. You only have to unlock and slide a couple of brackets open to remove it. No tools involved. I do it pretty often for carrying our ATV or dirt bikes. I've had mine for a couple of years and it still looks and performs like new. Another nice thing is it does not block your entire rear window when folded up like the trifolds do.
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What he said/ Got one myself.
First time I;ve ever owned a truck without a Topper but the boy talked me into a tonneau cover.
Came down between the Truxedo SentryCT or the Bakflip X4S and salesman took me out, showed me his truck with teh Bakflip, showed me why he recommended the Truxedo and that convinced me.
All of them will eventually come out of alignment because the box sides themselves will come slightly out of alignment.
The Truxedo iss the easiest to set right, out of all of them.
Like the Saleman said, he really don't give a crap if his comes out of alignment. he can have one of his guys fix it, for free.
Me, I got to do it myself or pay someone.