My '10 JKUR is a daily driver (40 miles total, country roads and highway, mostly). I also drive diesel pickups and CJ5's, and my JK rides like a Cadillac compared to them. The 3.8 engine is just fine. I have the Superchips Flashpaq and I love it (many on this forum love theirs as well). I have the automatic transmission, and would never go back to a manual. So, I would vote for the '10 JK you're looking at; you won't regret it.