Hi - I'll shortly be purchasing either an RX400h or RX350. I'm really torn between the two in terms of will I see a big enough benefit to justify the additional expenditure for the hybrid. Briefly, my driving habits are 85 - 90% city, weeks can pass without me getting on the highway. Most of my city driving is within a 10 mile radius, the majority of my trips are short. In theory, it seems like the hybrid would be the better choice. In practice, I'm not convinced the extra cost is justified. I've been driving an Expedition for just over 4 years now (I know that's terrible for gas, environment, etc. and now I'm willing to try to atone for my sins), so even the 350 I think will give me a nice difference in mileage while being better for the environment as well. Any thoughts/advice/suggestions will be greatly appreciated. Also, these 2 cars are my only choices - there's no other hybrid I like, and the 350 from what I've researched gets the best mileage of a midsize SUV. So it's one or the other! Many thanks, :)