I looked into this a while ago. I agree with most here that the 300 is not a 3D machine at all if built stock. The 202 and Cap are much more capable. Although 40 size planes are hard to 3D, it can be done! The Cap is a "banger" at heart. It is best at the hardcore stuff. It may be a bit harder ,than the 202 or Extra, to slow down. Some call it the SNAP 232 for good reason. My choice was the G-202 due to the following. It is more neutral in flight than the Cap. It has much better surfaces than the 300. If need be, you can extend them 1 inch too. Wing design looks easy to get a real straight wing. It looks easy to get a 6.25 to 6.5 pound plane. The rear servo for the rudder makes a 91FX or Saito 100 real easy. I'd drop the rod in a tube and install an MK bellcrank for elevator control.
I was all ready to order one, then I found my Su-Do-Khoi. Sorry Great Planes, maybe next year.