Current Defender is on borrowed time, whatever replaces it will struggle to please the die hards, I remember the outcry when the series III lost it's split screen and morphed into the 90/110, some say the series IIA was the high water mark and it's been down hill ever since. Think I'll just hold onto my '02 TD5 90 Hard Top for a few more years!
I have owned two Land Rovers: a first series short wheel base (I don't know if there was even a long wheel base first series) and a Series IIa long wheel base. Both used for serious off road work. I have also worked for a sheep station that had a Willys Jeep MB. From my memory the Jeep was much more fun to drive and had a much livelier motor than either of the Land Rovers.