Just a bit of personal relation to what Spinalguy is saying.... I suffered two broken backs and a broken neck between the ages of 16 and 20, while the bones and muscle have healed properly, I have massive nerve damage. The common symptoms I have now include inabilty to properly regulate body temperature on my back, I have no or little sense of touch along my spine, headaches, reduced vision, arthritis, and many more forms of general soreness, I am only 30 now and will only continue to suffer more as I get older......
4low, you had mentioned at one point cost was a factor in your decision, a couple things to consider. Depending on your credit it may be cheaper or equal to finance a newer JK over a TJ. I pay 20 a month more than my wife for my 03 TJ than her 07 JK unlimited, she also still has warranty and less maintenance cost on her jeep.
I would do a monthly payment comparison based on the different interest rates you can get on a newer jk and an older TJ, then ball park a yearly maintenance and upkeep for the two, factor in the different insurance costs for each and compare the totals.. you may be closer to a newer Jeep than you think.