Originally Posted by
mstraus
Looking at the topeak one, it seems to lack the "arm" for the speed sensor - this might make it hard to line the main sensor up with the pedal and wheel magnet and get it close enough to register consistently for both for some bikes. I know the bike I put it on wouldn't have worked with out this.
Yes but according to the user guide the distance between sensor and magnet can be up to 25mm! Which is quite unlike any other sensor I've seen, so I wonder how well it works.
Anyway, seems Wahoo is a safe bet then, thanks for the input!