Hello all...what a trip.
First, I managed to fix the Sigma Rox 5 I have on the road bike! Unlike a lot of the later models, the handlebar mount of the Rox 5 has sensor nubs on all four corners. I was losing connection with the sensor nubs on the bottom, so I unscrewed the part of the mount that contained the nubs, turned it 180 degrees, and solved the problem.
Which left me with the commuter bike issues...
So, I went out and bought a Wahoo Element Bolt. Using a new REI account and getting the REI credit card, I managed to pick it up for 230 bucks, and I am getting REI points on top of that.
I figure at that cost it really cannot go wrong.
I might just suppress the GPS functionality of it and use some of the other features more, like the Cadence sensor.

We shall see, I guess. If I don't like it, I will return it and get something like the ROX 10 from Amazon. It costs about the same as the discounted Wahoo.
I have an 1100$ phone that I really don't want to be the first at the scene of the accident, so the phone apps just would not work for me, when it comes to bikey wikey stuff.