I love the sound of a big V-8 and generally prefer the reliability and low end torque provided by bigger displacement, naturally aspirated engines over smaller boosted ones, especially in a truck. That being said, I can't dispute the fact that the F-150s with the Eco-Boost motor are quicker than the Raptor and it supposedly makes more torque. Also it gets a lot better fuel economy, however, a guy at my local Ford dealership stated that it doesn't do much better than the 6.2 L if the stock trucks are fitted with bigger tires and lower axle ratios, etc. Regardless, here's a pretty compelling youtube video from an outfit called SDHQ, who have put together their own Eco-Raptor:
SDHQ's Twin-Turbo Eco-Raptor - TUNED - YouTube
Seriously, the only 3 things I don't like about my 6.2 L Raptor SCREW is the 13 mpg I'm getting in mixed hwy / city driving, the lack of low end torque (compared to my previous '01 Ram Cummins TD), and the lack of a manual transmission option (also compared to my Ram, which had a nice 5 speed stick that was great fun to shift, except in city traffic). A supercharger would be great fun, but the truck already cost me too much and already gets such abysmal mileage, plus I'd sure hate to void my warranty.