I'm sure you know already that any Wrangler is going to pall in comparison to your F-250 4x4 . . . but the Wrangler will be a lot more fun to wheel! Definitely get the 4.0L fuel injected engine; the older Jeep engines are a PITA, and the 4.0L is going to much torque-r than the 2.5L engine. The TJ, 97 to present Wranglers, are suppose to be more resistant to electrical problems from washing down the interior than the YJ, but having never done this to either, I don't know if this is true. This may be a consideration due to your type of work site . . . I suspect you see a lot of mud.