That is up for you to decide. Easier tire changes, less weight, less heat buildup. Why are those two your only options? You could always buy some new 2010 smc tubeless wheels for much less than the ktmtwins setup and swap stuff over yourself. While they may say there is an option for a caliper relocating bracket, last time I checked with them it was not being made. Nobody makes one for the Enduro fork bottoms, fortunately the 300mm rotor is pretty darn good.