I put 88K km's on a 2007 LT. While the wife was fairly pleased with it, there was always something that didn't work for me on the LT. These are my impressions after 9800 km's on a 2014 GTL, with passenger floor boards and armrests.
I found problems with the seat comfort very early on with the LT, and had it modified, and still couldn't get that comfortable on it. 700 km's a day was a full day ride on that machine. I put the lowered pegs on it, which helped, but it still wasn't a perfect solution. I hated the dry clutch on such a heavy machine. I ride through the Rockies quite a bit, and with the wife and a full load, that clutch could give me issues. Labour at the shop was a killer. The highway pegs would work somewhat switching the legs back and forth, but having both up just killed my hips. While the saddle bags look fairly cavernous, there was a significant portion of wasted space. I found it really could have used another 10 to 20 ft. lbs. of torque, although the horsepower was definitely adequate.
When you compare it to the GTL, it's like comparing apples to thermal nuclear weapons. Surprisingly, the wife is more comfortable on the GTL (it is not the exclusive by the way), the torque is outrageous (I've dubbed this thing the Saturn V rocket) and has way more than enough horsepower. I really like the detachable bags, and there really is no wasted space in them. I have found the suspension an absolute dream, and as good as the LT tracked, this thing is absolutely amazing.
I live in Canada, so I was able to get the BMW helmets with the communication system. The bike shop here had no idea what they were doing when they linked everything, but when I did it myself, it works flawlessly. The same music for my wife and I, I get instructions from the GPS, and we can talk to each other with no issues. It is PTT, not VOX, but it is extremely easy to operate, and after working with it for awhile, I now actually prefer it to VOX. I WILL NOT ever hook up cell phones on the bike, but I know that they should work flawlessly if one is so inclined.
One of the first things I tested was the adaptive headlight. I'm hoping to see it on most bikes sometime in the future. It inspires a lot more night riding than any other machine I have owned.
I was leery about getting the GTL, as I really wasn't looking for a rocket, but I have to say that if anyone is looking to move from the LT, you really should have a serious look at the GTL. Everything the LT did for me, the GTL has it beat in spades. I've logged a few 1000 km days on it, and I know I could go further when riding solo without being crippled like I was on the LT. Sorry to post about the GTL on the LT forum, but I thought this might be some helpful information for anyone that eventually has to move away from the LT. Ride safe and have a great day.