which edge stuff? attitude? A2? whats the new one evolution or revolution?

mainly im using the truck to tow my flatbed with a car to events about twice a month. i may go to the dragstrip once just to check it out but not concerned with making the truck a hot rod.

basically looking to increase mpg for everyday use and then have the ability to switch for more towing power.

i tried the bully tri b4 you buy flash for +70 hp and it was a noticable difference and gave me 1-2 more mpg.

i'd just like to hear more 'real world' use and comments before i pick one.