Using spray in bedliner..any opinions??

[1970blazin]

I am going back and forth on what to do on the interior floorboards and bed of my blazer. I have it all clean (used an angle grinder and LOTS of pads) I was going to get Line-X to do it, but they are saying they want it 90% rust and paint free...I don't have the patience for that! I was thinking of using RATTLEGUARD.. I saw it on ebay...it is a DIY spray in bedliner. Also what do you think about Duraliner- roll on bedliner? The Blazer is different than a truck because all the liner will be interior, and covered by pad and carpet. How durable does that need to be? No sun, no big loads, ect. Sorry for the long post, but I am having a hard time deciding???? Here's a pic from a few days ago when I was only half done grinding...