Rust Prevention!

I need to do something about coating my floors, inner fenders, chassis, under side of bed floor, etc of my 66 F100, my new 76 F150 4x4, and my 46 Chrysler 3 window coupe. I have always used POR-15 for things like this and it was always fine for me but I have been reading around and hearing all sorts of things about other brands being better than POR-15 and also Eastwood has their thing about how their Rust Encapsitor (sp) beat POR-15 in some test a cataloge or magazine did...
Anyway's what would you recommend for something like this? All my vehicles has surface and scale rust all over the floor, etc and I just pressure washed all the oil, dirt and scale off both of my Ford trucks and would like to use some kind of Marine clean deal then use something that converts the rust BEFORE I use a coat of POR-15 or something that seals it. I know that it's supposed to seal it and keep it from comming through but I want something that actually rids of it or converts it before I seal it so I KNOW it wont come back years down the road.
I am going to get probably 2 or 3 gallons of whatever it is (1 gallon at a time) so I can do EVERYTHING such as inside the doors, under the hoods, in gaps, in the cowl vents, etc.
I'd appreciate any information on any products YOU PERSONALLY used and pro's and con's on them.
Thanks a lot for any help here guys!

ANY suggestions?

POR-15 actually does convert the rust to an inert material, thats how it works, it doesn't just seal the rust in. I haven't used any of the other brands, I don't see any need to, POR-15 does the job just fine and I haven't had any problems with it. Ive used it on everything from doing up a rusty floor board to whole trailers that we put together with steel that had set outside and gotten a good coat of rust on it. We even let the trailer sit outside for a couple of weeks to get a bit of rust on the welds and grind areas so that the POR-15 would work. A couple of these trailers are landscape trailers that get abused like nobody's business, and the POR holds up great. They advertise it where you let it set up and can bang it with a hammer and it wont chip, well I have tried it and haven't chipped it yet! I don't usually go by what a manufacturer, magazine or catalog says as they are doing nothing more than marketing. I trust what I use and have experience with. Just my 2 cents! :D

Ok sounds good. POR-15 is all I have used as well but after reading the thing on the eastwood company site it got me thinking so I started reading other forums and I saw people saying that the rust preserver or whatever it is that eastwood uses is a bit cheaper and better. I have only ever used POR-15 and it's worked great for me as well and I have gone through gallons and gallons and GALLONS of this stuff but only have seen it on something for 2 years. After the 2 years it still seems to be setting up fine but I am wondering about 10 years down the road not just 2, that is why I have asked this question. I will probably just buy a gallon of POR15 and the marine clean, etc and use that on the chassis and stuff. As far as it fading from UV, I don't care, its all underneath the vehicles and inside so I am not worried.

I'd go with POR-15. Don't know much about Eastwood's Rust Encapsulator and it might be good stuff. But POR 15 has a proven record. I have used Eastwood's Carroless(sp) and it was good, but they no longer carry it. Wonder how long they will have the Enscapulator before it is replaced?:confused:

Sounds good. I will just go with POR-15 then and the Marine clean stuff before it.

You can paint over POR if you are worried about UV fading. :cool: