Thinking about buying a "newer" truck - any advice?

I've drove a 97 4.6 F150 around town truck for the last 10 years..no spark plug issues. I would imagine the newer 4.6s would get you 20mpg on the highway...specially with a tonneau cover. I had a 98 F150 with 3.73 gears...it was a fun and pretty good handling truck too. It would get 20mpg on the highway at 70mph. My present truck is a short bed reg cab XLT and I also put on a rear sway bar and upgraded shocks it handles pretty good.

It's a pretty rare one though.