To the OP:
I was in your position just a few months ago. I wanted a tough, off-road capable, yet nice mid sized SUV. I use mine for hunting, fishing and driving around a larger city so the mid size is perfect for my needs. Like you, I was looking for a vehicle that I could drive for at least 10 years as I am a cheap ass and do not like having a car payment nor losing money on trading in a car.
I looked at everything out there, was coming from an old Xterra. There aren't many real SUVs left out there. Most are cross/over car type vehicles that happen to have 4WD. It came down to the JGC, Land Rover LR4 and Toyota 4 runner.
1. I checked out the Land Rover and thought that it seemed kind of plain for the price tag. Also, every Land Rover owner I know has had major problems with them. A good friend of mine has a LR4 and told me that he likes it but it is an expensive vehicle to own and maintain. If you've got the means and patience, it would be a great truck. For me, I'm too cheap to keep paying that much to fix problems that in my opinion should not exist on such an expenisve truck. Also, reliability was very high on my list so that pretty much killed this option.
2. The JGC (overland summit) was nice on the inside but kind of reminded me of a cross over type vehicle and didn't feel like a truck. It seemed like you got a good bang for the buck but as I was driving it all I could think about was all of this fancy stuff falling apart. I especially didn't trust their new air suspension. So, I did some searches on the jeep forums and it seemed every other thread was about a new JGC having major problems. Do some searching and you'll see what I'm talking about. Another big problem I had was that I didn't want an American car. I just don't like all of the knobs, interior, windows, etc breaking. Also, like someone posted above, the Chrystler Corp. has a good chance of dying in the future. I have several friends with 10 y/o+ 4 runners that are running strong/problem free with only general maintainence. One guy I work with has 250K miles on his and he said, "it's just now getting broken in".
3. I ended up getting a Mag Grey, Limited 4x4, Nav, sliding tray, roof rack cross bars. It took a while to find this exact setup but after 1 month of searching I found one and have been driving it for the past 2 weeks. I love this truck. It is as luxurious as I would want it to be without all of the wooden type fixtures in it. Sure, there is alot of plastic but it looks good and the fit/finish is absolutely perfect. The power is a bit less than the V8 of the JGC/LR4 but it has plenty for my applications. It easily cruses at 80mph on the highway and still has plenty of power for passing at this speed. It handles like a truck and not like a car but coming from a Tahoe you are probably used to that.