Meh, there's some truth to what you say BUT... if Lexus service is anything like Infiniti service, the dealership experience may influence customer satisfaction in a big way. Had a friend years ago who had a used G20 (basically an upscale Sentra.) Missed a shift on the freeway and got a free head rebuild from the dealer even after admitting to blowing said shift. He eventually traded it for a Z, and complained that they didn't treat him as well afterwards.
The reverse can be true as well. IMHO VW made some of the finest small FWD boxen on the road in the 80's but their dealer service was so atrocious that they always were at the bottom of the barrel in customer satisfaction.
Magazine road tests do tell you a lot about a car, but not always everything you want to know. Some Mitsubishis road test well, for example, but I wouldn't own one if it were free. You can't predict dropped valve guides at 50K miles based on a couple hundred mile road test of a new car, but you CAN assess acceleration, handling, and comfort...
Now what I want in a car is light weight, great handling, rear wheel drive, gobs of power, a shifter that feels like the bolt of an old, well-oiled ought-six, controls that as they say "fall readily to hand" and comfortable, supportive seats. I also want dead nuts reliability and an econobox price. Unfortunately I don't think that this car exists :(
nate