I agree on the 100-120cc airframes. They seem to be most popular currently, I myself am wondering about some transmitter comparisons. I currently fly Futaba, but am discouraged that they do not offer a high voltage input receiver without using s-bus. I recently asked our fellow members for input, which helped me better understand the s-bus theory, and think it is cool, but also think it makes things more complicated in ways. I considered going to another manufacturer to keep things simple however am stuck in the boat of expense to convert all models! This is where I could have used actual research over what I read in magazines.