Chassis / Suspension / Axle Paint options?

[D-n-Tyke]

Starting to dig into cleaning up and redoing the frame and suspension on my low-budget build. Going to start by cleaning and repaininting the rear end and trailing arms. What is the best option out there to finish these with. I have searched and found that for low budget there pretty much are 3 good options. POR-15, VHT Chassis and Rollbar, and Rustoleum. Only thing I couldn't find in my search is longevity of these products. What are your guys' experience with these. Interested in hearing how these 3 last over time (ie over years). I read that POR-15 fades in UV so that is kind of a slight draw back for POR-15. Any draw backs to the others? Are there other products I should be looking into? Side note, planning on doing this work in my driveway so rattle can or paint brush application is a plus.