i have an edge ez for my truck,it is a solid unit like the size of a pack of cigarets and has only two hookups. my question is why do i see people post topics about the edge ez as being adjustable,whats the difference?or are they both called edge ez?my edge ez cost about 400. 00 is the other one a lot higer or what?and what does it do?is it a lot more powerful? mine is about 50 h. p. and a 100 lbs of tqe so i was told. thanks