Strava is killing my iPhone battery, so want a Garmin.
500 / 510 / 800 / 810?
Don't really need the map navigation. Would like to record all my stats and have the HR strap and cadence. Is the 500 more reliable than the 510? 510 better GPS signal / connectivity? Any particular features that make it worth £70-80 more? Is the current Garmin firmware decent or problematic?
Strava is killing my iPhone battery, so want a Garmin.
500 / 510 / 800 / 810?
Don't really need the map navigation. Would like to record all my stats and have the HR strap and cadence. Is the 500 more reliable than the 510? 510 better GPS signal / connectivity? Any particular features that make it worth £70-80 more? Is the current Garmin firmware decent or problematic?