Bought the ES 2 weeks ago. Today was the 3rd time it went back to dealer. Lots of rattles from front passenger door, front deck (stereo area), rear deck (seat belt). I was driving their loaner ES 350. That car has nearly same rattles as mine. Rattling is the problem you can't find during test drive. After you take the car, if there's a rattle you need to locate a more precise spot so that it may be easier for their technicians to find and fix. Really doubt about Lexus's quality. Others than rattling, I enjoy my ES very much. Fast and comfortable.
Accelerates fast, comfortable, base stereo is good enough.
Enhance integration quality. Rear visibility is not good, rear camera might be helpful.