Ownership wise the Lexus is supposedly a pretty bulletproof car. At the end of the day it is made by Toyota. Parts supposedly cheap...
Also not a bad car to drive...smooth six speed 6 cylinder (if in manual mode). I wanted to buy one at one point but after driving it it left me a bit cold.
My friend has one. Drove it once and travelled in it a good few times. Not terribly impressed. It looks very cheap /boy racer-ish inside. It's quite springy and responsive and handling is ok but it's not really a luxury car. He had trouble with electrics in the car as well, so not sure about the japanese car reliability myth on this one. Overall I think you can get a lot nicer cars for the same amount of money, but depends on what your priorities are.