Have:
- cadence, speed, HR sensors
- multiple bikes, primarily road but also MTB and hybrid

Need:
- Track mileage, current speed, avg speed, HR and cadence.
- Backend to Strava

Would like:
- link to phone to show messages
- local maps (display only)
- w/kg from power metered pedals

DON'T need:
- navigation
- loading routes, etc.
- interoperability with rear lights, circus carousels, Swedish supermodels

I have almost all of that via apps on my phone, but apparently my phone's camera will have the autofocus compromised, and I was not happy when Strava dropped support for HR sensors (back this week after 13 months). And really, I want to get away from my phone when I ride. The only thing I want linked is texts, bcos only my wife and close friends text me. And smaller is always better.

Which bike computer do I want? ELEMNT BOLT? ROAM? Garmin 530? Something I don't know about?