I was waiting so long for this moment. At the same time I had some fear. This is my first bigger heli with beltdriven tail. The fear had no reason: My very first flight mith my OMP M4 went fantastic! It was so much easier to fly this beautiful bird than I thought! More stable, very predictable, very precise, very powerful and very present in the air. With the help of my friend Matthias Plura I set this beautiful helicopter perfectly up. One reason why it is flying so precise. The many hours of work and at the same time fun are paying off now! If you love the rotor sound of fullsize helicopters you should go for such a bigger machine like the OMP M4 with a rotor diameter of 875 millimeters. The best thing is: Used to smaller helis like the M1 and the M2 I thought that these bigger machines would be frightening.The opposite is the case: Already in my very first flight this heli was behaving so predictable and so precise, that I developed very fast a lot of confidence. From the first minute I felt this machine. No surprises, no strange behaviour. She was just doing what I wanted her to do. So if you can fly small helis, you will be surprised how much easier it even is to fly the bigger ones. Anyway I am happy that started with the small ones. Because they are light, if you crash, you will have much less damage done to them. Parts are cheaper, batteries are cheaper. But if you have a nice budget that allows you some unwanted expenses then go right away for a bigger heli. Many things are happening a bit slower that with the small birds. And you anyway have to have respect in front of them. Even smaller helis can cause some harm.