Wow they really do hold their value well, for almost 300k I would have expected like a 2k price tag.
When it comes to the 4th Gen, I have read that 06+ should be the years to focus on, I know a few 03-04 had head gasket issues in the 4.0L. Also in 06 you get some more refinements not much but a few. One is projection headlamps, and I am not sure, but one year finally adds a button to turn off traction control. Keep in mind the limited and sport models (also urban and trail in 08-09) came with the Xreas suspension, alright in stock form, and if it functions correctly, pain to fix when one shock blows, I would recommend ditching the system all together and putting a set of good shocks all the way around.