We traded up from RX's to the GS450h for efficiency and environmental reasons. But, the first time we drove at night was a revelation. The bi-xenon HID lights are simply no comparision to the bright and expansive headlamps we expected. They've checked them out thoroughly, but no, that's what you get. A critical component that nobody ever addresses! The LED lamps that come with the luxury package are impossible to find on any Lexus lot, so a comparison is, well, impossible to date. My suspicion is that the LED lights are better; otherwise, why would they be available only with the luxury package. Have you experienced the LEDs on a Lexus? We've driven the car a little over 1000 miles.
It certainly is a good car otherwise. It's got more features than you can shake a stick at. But, what's the use if you don't feel comfortable driving this car at night.
Improve the illumination qualities of the headlamps radically. They do not illuminate much and are too limited in the distance they do illuminate.