I had the 300XS and really really liked it. Mine was powered by a MOKI 1.8 and had no balance issues at all. It had a pilot figure in it. I took out the 5oz pilot and swapped the aluminum gear for carbon fiber. It ligthened the plane by 3/4 pound. This combo flew great!

It came to an untimely demise one day. It was in a nice deep flat spin. I ran out of altitude and had an unavoidable collision with the terrain. Again, great plane. Very smooth.