I have both the stock gear and TNT gear. There are advantages and disadvantages to both. With the TNT gear you will lose some weight but you also have a gear that is about 4 inches narrower than stock. That makes the plane a little more tippy on landing. Also, the stock gear has a bit more ability to take the shock load on some of those less than perfect landings. On the plus side, my plane with the carbon gear, wing and tail tubes is in the mid 15 lb range. With a DA50 my plane has all the power I can use in the stock or lightened configuration. So which gear would I buy. Well, if you want to make the plane better and stay at stock weight I think I would call Tom and order the heavy duty alum. gear AND a new carbon fiber wing tube. Just my two cents worth.