FYI - Not many LX570 owners overall on the forum.
**DISCLAIMER: The following is purely our opinion based on what we've seen and driven**
We had decided to get a Land Cruiser many years ago. We started looking at the 100-series back in 2008. They were still wildly outside our price range. We decided to save up and see where we were in 4-6 years. Fast forward to 2015 and we had a bit of changed stuffed away to get a Land Cruiser. We started looking at the 2013 and liked the changes from the previous model year. Unfortunately, we happened to take a look at an LX ('13) when we were looking. It was something I shouldn't have let the wife do. She immediately started in on the difference in the interior quality. Real wood trim, leather throughout, and the front seats were more comfortable. Off-road capability is equal to the Land Cruiser and garage capability more so. The ability to squat the truck or raise it is very convenient. The exterior isn't our cup of tea though. The grill is not what we would call "attractive" at all. Also, there is a bit too much chrome for our liking, though this is a bit less than the 2008-2011 models. We are looking to modify front as soon as Christo & team release their much anticipated rear bumper and sliders. We'd much rather just do it all at once.
So, the bad right? One of the fans on the amp went out. Instead of replacing the fan, the dealership replaced the amp. Also, what appears to be a common issue on the Land Cruiser side of the house affects us as well. The truck was sitting about a half inch lower on the driver side. This was diagnosed down to a faulty suspension ECU. It didn't affect the ride at all but, was sore on the eyes. Anyway, we've not really had any other problems. I've got a thread on here that goes into the story about the AHC.
We're only @ 42k miles so, reliability is still not something we can comment on. I will say that we did a lot of research before making such a large purchase. Toyota has some of the best build quality out there. So, we're rather confident in the purchase.
Anyway, I hope this helps.
Chris