I bought the Prius V and love it but frankly it is very under powered especially when going up hill. I thought they could have designed it to have about 160 hp with a slightly larger engine. Last week a friend let me drive his 2012 Camry hybrid and it is so much more powerful and smooth and I was getting about 45 mpg with after 30 miles. If I have to do it again I still buy the Prius V over the Camry because I want the versatility of the hatchback but the lack of power seriously pushed me closer to the Camry Hybrid. I think the C-Max will not be a Prius Killer but it will be a formidable competitor and I believe it will take maybe 20 to 30% of potential Prius sales.