I think that you give the Fitbit short schrift. My $100 Fitbit gives me very useful feedback on my sleep, as well as all the other data.

It accurately graphs my sleep levels, how often I get up to pee, etc..

I’m not saying it’s perfect, but I can definitely corroborate events in the night with the chart.The ‘score’ it gives is not always a reflection of how I feel, however.

It’s best that I don’t look at the chart first thing in the morning. Nobody needs bad news that early.