I think the big difference is the radio gear is so much lighter. You can make a virtuous circle of it (opposite of a vicious circle). Lighter gear means the structure can be a little lighter too. I had a plain old Enya .15 IV on a Wicked Wanda, 44 inch span, and it really moved. A lightly built Flea Fli would be even faster and more capable. Unless you're looking for OOS vertical I don't think you will be disappointed. Jim