Originally Posted by Lightchop

Really? I sort of thought that might be the case for power meter. But I cant figure how it determines cadence with no other hardware?

And do you use Zwift? Or can you recommend anything else? There are a ton of apps that appear to be supported here (Wahoo App Comparison Chart)

And on the cassette - in fact I too have an 8-speed. But I saw somewhere that it came with spacers to make it work. Is that not the case? My derailer is only 9 speed so going to 11-speed would be another cost I'd need to factor in.

Thanks.