Well I have a Lexus 400h and a Prius and somehow I seem to do better than average on both cars. With my Prius I get around 52 to 55 MPG on the highway in the summer months with the AC on and driving 70 MPH, city wise my trips are real short usually 2 or 3 miles max and I only get 40 to 45 MPG city.
As for looks, I like it and as for comfort, yea its no a Lexus 400h, but its not uncomfortable for me either. So much so that we often drive it on vacation trips of up to 400 miles one way. Longer vacation trips we take the Lexus.
I looked at the Yaris and Fit, no way not comparable in my opinion and as for the extra cost of the Prius, just look at the resale value of the Prius and that will only get better as the price of gas continues to rise.
Also to respond to your earlier comment about the Lexus Prius being an ES, well the dealer told me it is supposed to be a new platform for Lexus, not a shared IS or ES but something in between like I said in my last post.
I just take a wheel dedicated microfiber and clean them by hand.