My wife has an RX400h. I just traded my GX470 for a Limited HiHy....I have ben very impressed with the HiHy thus far. The summary above is quite good, but to be honest the HiHy is fine for comfort. I was amazed at the gas mileage so far (I have 2200 miles on it). Average is 28.2. I just drove to and from Steamboat twice this last week and averaged 33.4. My wife likes the RX more, smaller mainly.