durango in the years you are looking is a pretty solid vehicle. as are most in it's segment.
sxt's are a bit different than the limited, but yeah.. definitely less coin. biggest difference is the heated leather interior with lots of little upgrades like back up cams, sensors and the like... only usually about 5k less new, so if you are ok without those other toys (the low 40's ones are usually dual dvd, navigation, sunroof, +, +, + and all are equipped similar), then they are a decent buy.