I love the consistency of the HR data I get from my old-school Polar watch and band, but you're right, after a few hours the band is pretty uncomfortable. I was

I love the consistency of the HR data I get from my old-school Polar watch and band, but you're right, after a few hours the band is pretty uncomfortable. I was quite disappointed with the Basis watch. Even when it did work my HR would often swing up and down unpredictably. If Apple nails the HR sensor, I will be stoked. I have often wanted to have an entire days worth of HR data so I can make better guesses about my daily caloric burn rate.