Roll On

I have a ‘96 Ford F-150. The original truck bed liner had been sold and i am now in a bind. Should i leave the bed as it is, with just the metal, or should i get a liner?
The metal in the back is not in bad shape but is kinda rusted in places.
I dont really have a price range, but anything in the 500+ range is just too much. So which liner should i go with? Another plastic liner, do it yourself roll on liner, or a professionally sprayed liner? I wont be moving heavy loads except helping friends move furniture maybe once. So i need a liner that is still heavy duty but not the heaviest and i would like to know which one i should get.

http://www.durabakcompany.com/automotive.htm

This one looks interesting.
Easy do it yourself application.