I agree with MOST of what Dave said. Completely correct with the Mode I and II definition, BUT Mode I IS flown by a few in the US, although Mode II IS most prevalent.

I doubt that the Mode I incompatibility of the radio you're considering will ever be a problem for you.

I'd like to make a suggestion though. If you're considering a 6 channel radio, you should seriously consider a computer radio. You won't be sorry.
Dennis-