From the 03 model year on all the models came standard with Traction/Stability Control(TC, or M-ASTC)I love that...the only downside when wheeling it off-road is that it will overheat after some steady extended use....when it does that you just wait and within 10-15 sec you are able to go again....if you don't wait for it to come back online your drivetrain acts as if its Open/Open front and rear. This TC has gotten me places that most people with lockers front and rear go. It does have its downsides...don't get me wrong its not a true locker but its the next best thing IMO

Prior years to 03 came with LSD in the rear and open front and no TC. The third seat option I love. Cause it folds completely flat and into the floor compartment leaving you with a completely open cargo area....and if you don't use the 3rd seat you can take it out completely and then have a lot of extra storage space for everything. I do this while off-roading to carry stuff that's not strapped down in the cargo area so its not flying around everywhere in the back.

Only downside to the Gen 3 is that you have even less aftermarket support than you do for your Gen 2 so everything has to be fabbed up yourself. (Which is a challenge and I enjoy that part, but some don't).
Hope this answers your questions.