I own a Dreem V2 headband and though it's more cumbersome than a ring, it's really not a problem. It takes me less than a minute to put it on and activate it each night and though it's a little uncomfortable at first, I got used to it quite quickly.

I disagree that it's "more like a medical service for insomnia". The app does have some of your standard CBT stuff in it if you choose to use it but there's also a lot for people without major sleep problems as well. For example there's a sleep schedule function that will give you bedtime reminders and automatically wake you in the morning when you're in a light stage of sleep.

As far as data, I'd say that's one of the major focuses of the app. "Sleep reports" (weekly summaries of your sleep habits) are made very prominent in the main screen of the app and contain reasonably comprehensive but very approachable pieces of data.

As for accuracy, I've compared various products of various kinds such as under bed, apps and wristbands (though not Oura) and found basically everything but Dreem to be pretty garbage at doing anything more than detecting that I'm laying in a bed. I'm not convinced it's possible to detect that I'm awake but lazily delaying leaving the bed with anything but an EEG.