One thing that you could do that wouldn't cost you a thing is like what CGR said, learn precision. Even with the planes that you currently have, you can still hone up on your precision flying. And, it doesn't always have to be swirling around in the sky, just try controlling the plane with certainty, not reacting to what it is doing. You'll be amazed at what you can do (and how much focus it takes) to just get a lowly trainer to do EXACTLY what you want it to do-- every time! Lessons you learn at this stage will only help you on the next step of your RC experience. My .02