My Lexus 400h is the best car I've ever owned, and I've own Beamers and Mercs. I get 28.5 mpg on mostly interstate driving during the summer and 25.5 mpg in the winter. Somehow my 21 year own son can get 32 mpg, swear on my mother. Believe me when I say I don't know how, because he has a lead foot. This car is smooth, and quiet. Love the CVT and I don't miss the transmission shift bump. I'm buying the 2010 RX 450h when it comes out and I'm trading my wife's 2006 IS250 for the HS250 when it comes out in the fall of 2009.
The amount of power this hybrid has when you need it. All the controls and layout. The CVT. The hybrid wheels. The paint. The sound system. The easy fold down seats. The total build quality.
The 2010 will have a push button starter so that's off my check list. So the only thing I want is to make my hybrid a plug-in and I'll be a happy camper.