Here is a quick size comparison review for the new helis that are coming in for reviews. I compared their sizes with TREX600 Nitro Pro and see what these new companies are calling their sizes on their helis. I am happy that Walkera is at least not playing with numbers and releasing good sizes matching numbers, while KDS is totally precise when calling their helis 550, 600 and 700E. Those are industry standard sizes. Comments and feedback welcome at [email protected] or [email protected] Don't forget to Subscribe to