I've had a truck Rhino lined & one done with Line X
My biggest problem was with the Rhino lining, it rusted in the corners after a few years (where the water accumulated & sometimes sat for days), and it was very slippery when wet.
Just had my 03' F150 done with Line-X & had them spray a bed with a hose & let me walk around in it before I'd let them do it. Rhino may have changed their formula since I had my first truck done, but it was verrryyy slick when wet, and I thought I was going to break my neck more than once.
The lining is expensive, but I really like mine & it keeps you from looking @ scratches if you actually use your truck like a truck (most folks don't use their 1/2 ton trucks as trucks, I'm hauling gravel this weekend in mine).
If you want to save $, & aren't planning on using your truck heavily, get a bed mat & save a few hundred $.
I'd looked into a drop in bedliner. but the ones I found vere very cheap and looked ghetto, there are some good ones out there, but I couldn't find a dealer that stocked the high end Duraliners, just the cheaper ones Duraliner sells...
Ended up putting in an aluminum full tailgate protector on too, instead of having the Line-X sprayed on the tailgate, it looks great:
Pics