I have a 05 rx330 and am considering upgrading to the rx350.....its killing me seeing vitually the same car I have with 50 more horse power! Anyway, stopped by the Acura dealer to take a look at the MDX...300 HP is even better. The MDX looks much bigger then the RX...even though it is only a couple of inches longer, it is 4+ inches wider. It looked great inside...it is just the fact a don't need or even want a 3rd row. I'd be interested to hear your thoughts after your test drive.