DM1's are probably pretty heavy because of the added parts for the laydown shocks larger overall size and body my guess would be the 1/7 and the DM1 are pretty close in weight. IGT's have a shorter wheelbase and less aluminum than the buggy counterpart so they will be light. Heck My IGT with the light weght chassis and parts and such is just under 8 lbs with the body on and a full tank of fuel. Hyper 1/7's and DM1's are wicked Rc's though.. Whats next Bill? 1/6th? 1/5th? How aobut making that 3rd gen Radio control.. lol!