We are a Lexus family with currently an LX and a GS. We were ready to add a large sedan and spent an ample amount of time driving the BMW 745LI, Mercedes S550 and of course the LS 460L. Although the S550 is an extremely nice auto, I'm very pleased to have saved $15k-$20k and stayed with Lexus. This is by far the nicest automobile I have been in and is an absolute pleasure to drive. I thought the LX wouldn't never be replaced as my favorite auto, but neither it nor the GS has been out of the garage since the LS came home. Forget about the negative auto park reviews, that's not why you buy this Lexus.
Power, technology, ride, quality, features, friends love the back seat, 8 speed tranny, just about everything about it.
The passenger seat is just not as comfortable as the driver's. The bottom seat cushion should adjust to give more support under your legs, like the drivers seat. When you're tall, you notice things like this.