I'd like #1 as well. I do have my Apple Watch, but I'm not sure how accurate it is compared to the bike's sensors; I know the Fitbit I used to use would often show as low as 70bpm when the bike was reading as high as 140 or more.
Edit: actually, I see you're using a Fitbit. Do you find the heart rate on there bears any resemblance to real life while cycling? Mine was pretty good the rest of the time, but a bike would confuse the heck out of it.
Edit: actually, I see you're using a Fitbit. Do you find the heart rate on there bears any resemblance to real life while cycling? Mine was pretty good the rest of the time, but a bike would confuse the heck out of it.