You beat me too it. That's actually my thread. It cost me almost exactly $200 with all the supplies and sprayed. I had a 18 gallon air compressor before hand. It's about $125 for the kit that includes a gun and 4 quarts of paint. It's a great finish that is very easy to clean. It doesn't add much if any traction on the flip side.
I would defiantly stay away from Herculiner. It fads and often looks sub par.
Monstaliner has tons of happy users. It's a roll on that can also be sprayed. It's about the same price as raptor.
Having the jeep Bedlined is the best mod you can do. It cleans up in minutes. No worries about spills, dog hair, sand, dust, mud, snow, or slightly dirty cargo. I also now will roll out even in light rains or if it might rain with the windows out. It's way less stressful over all. The thing is that it is very time consuming to prep. Then you need to let it sit for a day or two to cure before putting the seats back in.
Good luck with what ever you choose.