Sorry, but I do not agree with that.
You can buy a much better all round vehicle in a diesel BMW X5 (even in 'twin turbo' guise) that gives you both economy and power - and I would wager this is superior to the RX Hybrid. The only case for the hybrid that I can see is the London Congestion Charge or for business users, BIK - even on the BIK the X5 pushes the Hybrid close.
I was not saying that the RX hybrid is more economical or better than other vehicles in the class, the point I was making is that people who buy the RX hybrid are not buying it for economy (or they are very misinformed if they are!) but for ticking the green credentials of it being a hybrid. Maybe the X5 is a better, more economical vehicle as a package, but my own personal preference would be an RX - I prefer the styling, I'm not saying it is any better, I just prefer it.