Does it really make sense to try to fly an RC model "by the numbers" like it's a jumbo jet? You shouldn't need a data read-out to know you're coming in too fast -- or about to stall. Knowing the engine temperature seems a little more useful -- but personally, I'd find the noise of someone standing next to me reading out a digital display more of a distraction than a help.

I see people at my club here in Japan using a Futaba 9C with a thousand bells and whistles to fly a foamie (EPP) or a casual sport plane. There's really no need for that much technology is most cases. But that's just my opinion.