From what I have read from your posts the past week or so. I think you would benefit the most by seat time(flying) and having your quadcopter tuned for your style/ needs/ preferences. When I got into this hobby I constantly wanted to buy the next hot item that would make my quad fly faster, farther, higher Better flight Control, beter. Escs, faster motors, all those things make Me feel better when I buy Them. But they didn't make me a better pilot. Now I have a quad that is way crazy for my skill level. I was a mess flying it, I though i was going to crash every second I was in the air. I started small, Just learning to hover. Then little small Figure 8's. Now I am confident enough that im excited to go fly and I'm not scared im going to crash it every time i go out any more. I think that the YouTube videos look so good because the pilots flying them, not the equipment they are flying, they could make any frame, fight controller, esc, motor combo seem amazing. That just my opinion. Stick with it. And There is no reason why you can't buy more planes or multirotors to to practice on. Good luck