Well where do i start, lol.
when pulled up at lights next to a corsa with every concivable bit bolted on, make the tinted window smoothly roll down and wink at his girlfriend, watch her wink back, him get jelous rev the engine and let him hear the hks fire up and leave him behind, with his girlfriend sitting there wishing she was in the lex. lol.
The other bits i love have already been said, the reasuring clunk of the door shutting, the smoothness of the steering, feedback of the steering. And the big smile that getting the ***** out on the car next to a neoned up nova when everyone looks up and not at his car.
All my reasons seem self serving but are just the fun bits, we all know the best stuff because we all own the best badge on the road, lexus truely is the best :D