If its any help I went from a IS220D in Sept 08 to a new RX400H SR MM. I love the car and cant believe I've had it so long, its still a pleasure to get in and drive it as if it were new. I do quite a few miles per year (30k) and have had no problems at all, in fact I only got a new set of front tyres at 30K and my back ones are just about ready now (34K). I slightly miss the keyless entry and the push button start, but I can live without that, the MM is the same except you get a cassette player as well (how cool is that!). Performance is pretty good for a big car and my av mpg is around 30ish, I can get better if I drive slower. The family love it, we can throw our camping things in the back and go virtually anywhere and have some great fun. It has the luxury, the higher driving position, the power, the vesitility and the smile factor! Enjoy.