In my opinion - neither.

1. My brother-in-law has the Rhino liner, and swears up and down he wished hed gotten a normal liner. Dont crawl on it with shorts on.
2. Dealers liner - too expensive. I got an aftermarket liner for half the cost the dealer was going to charge.

I think the Rhino is "heavier duty", looks ok too - but i think i will stick with the normal liner. My 2 cents