I think the biggest success factor in the spray in liners is just like paint, PREP WORK !!! The better it's prepped the better the quality and longevity. I do suggesting looking around at your local authorized spray in bed liner dealers though. I wish to hell I could remember the brand of the one we used at a local Chevy dealer. It wasn't Rhino, I know that much. But it was thick and finer than the Rhino.
It looked very sharp and wasn't near as pourous as Rhino but was tough. Though I do think Rhino has different textures now too. Rhino is a good product. But I like what we were getting done at that dealership. Very tough, and a finer finish that looked really nice and was about 1/8 in thick. It was so fine it looked like those no slip sandpaper style strips you see laid down and stuck to floors in factories and distribution centers on their loading ramps and such so your shoes and boots grip and you don't have accidents. Nice Finish.
Oh and Tonneau covers, if ever you one installed, DO NOT ever tow it backwards on a trailer or allow a tow driver to load it backwards on a rollback. Even strapped down, thinking he'd stop the wind from getting under it and ripping it off in 1 pc, they just break in half or thirds instead where ever you put the straps, at highway speeds if air gets under them.