HI guys, new member here. I bought a new 02 ho. this past summer. do a fair amount of towing,Bigfoot 11ft. camper. three horse trailer , around 20,000gvw. Question is,what box would be better for me,VA or EDGE. what box is best for low end?also does the VA come with a boost module?Iknow where too get a edge . where can I get the VA ? THanks very much,Rod