I want to add a power box to give me that extra umph while towing, stopping the downshift crap. My boat and trailer is about 9k. Is the EZ good enough, or do I need the whole Juice/attitude set up. I don't want to hot rod around and will never (well, probably never) use the higher settings. I don't plan on a new exhaust, I like my vehicles as quiet as possible. Changing settings on the fly isn't important to me either, and I don't think I need guages, since I usually tow at 65 or less. Maybe just a hypertech will fit the bill for me?