The summit racing paint brand is a good cheaper product, the most important thing is a good prep job on the truck before paint as that will make it look the best, as has been stated, 2k epoxy for your primer will give you best outside rust protection, cavity wax on the inside after paint will protect the inside, don't mix brands of primers, paints, hardners, reducers as your just asking for trouble there especially with a daily driver in lots of different weather and salty roads. Anything with a hardner will keep it looking the best for the longest and give you the least amount of grief if you ever want to touch it up or repaint it. Don't rush things, paint jobs only look as good as the prep work.
