So glad I made the jump to get this, after years of reading reviews and wondering if it would be another gadget that I would push aside after a while. I have been meditating since 2016, rarely missing a day, using Headspace (and sometimes TRIPP on Oculus Quest). I have an extremely distracted mind and sometimes I’d go a full 15 minutes forgetting that I was meditating, instead obsessing over something that happened years ago, yesterday or anxiety over what is coming up next week. Muse 2 is a game-changer for me. I’ve not only learned mindful awareness through some of their courses, but I’ve also learned how to tune everything out and focus on my breath *without* the device, like in a doctor’s waiting room or visiting my family, lol. I’ve become more self-aware and present throughout the day, aware of the floor beneath my feet or the sound of the outdoors. Basically, my busy mind has calmed considerably. I’ve never, ever had an issue with signal drop, so I can’t speak to that. I wonder if the negative reviewers may be expecting too much? It doesn't instantly make you meditate better and take you straight to nirvana, it trains your mind to do better over time. I’m especially intrigued at how accurate it tunes in to my brain. You can choose from several different soundscapes, such as City Park, Ocean, Rainforest, Desert, Gentle Rain, and I think there are others. The sound of the birds differ just a bit depending on the soundscape. I like the Rainforest, and the moment my thoughts drift to how funny my 5-year-old niece is, or the research paper I have to turn in, or the noise my husband is making in the kitchen, I immediately hear the chatter in the Rainforest get louder. As I bring my breath and attention back to the task at hand, the chatter dies down and I can once again hear the birds. (City Park is pretty cool though, you hear people chattering non-distinctly until your mind calms them down to quiet. Great practice for those get-togethers from which you want to mentally escape!) There was an update made just a couple of weeks ago that was very interesting! Premium subscribers (and I paid less than $20 for a year) can now listen to other apps on the same device, at the same time you use the Muse app. I loaded up binaural beats on Pandora and to my surprise, the beats didn’t help one bit, in fact they distracted me greatly. My husband uses this feature to listen to Headscape along with his Muse meditation. One more thing: you can choose to meditate your mind, or breath, or heart rate or body. You can only do one at a time. I use the mind meditation in the morning to clear my mind for a good work-day, and the breath meditation in the evening. The breath meditation measures how you sync your breathing with the beats they give you and it’s very calming. For the courses they offer, Muse measures the mind, heart rate and body (body, meaning if you are fidgety or still). If I had to complain I would say these two things: (1) I wish you could choose two or more meditations on which you want to focus. For example, I have heart problems and when I do the heart meditation, I can see the sudden dips in my heart rate that I've told my doctor about. I can do that with the heart rate meditation, but if I could do the mind and heart together, it would be better. I can also measure three features with the courses, but sometimes I don't want to hear talking. (2) Yes, you calibrate the device each time you put it on your head to meditate but it's only about 6-10 seconds long. I would like to have a 30-second lead time to ground myself, set my intention and prepare for meditation (habit from Headspace).