Sennheiser wireless microphone frequencies
 

I'm about to pick up a Sennheiser G3 wireless microphone. I see that there are three different sets of frequencies; A(516-558 MHz), B(626-668), and G(566-608). I live in a rural area where there shouldn't be much interference. Are there any reasons (audio quality, range, etc) to choose one set of frequencies over another?

Thanks.

Did you check the frequency finder on their website? It'll tell you exactly which ones are unoccupied.

Yes, I did. It looks like any of the three would work.

If there's no difference, I'll just go with the G which I previously added to the cart.