My work has a program where if you wear a Fitbit long enough you start to get points that save you money on health insurance. I'd had a Fitbit One a few years ago, but I lost it because I kept it in my pocket, so this time around I wanted one of the wrist models. I quickly settled on the Aria. I have an Apple Watch and wanted to keep them on the same wrist, so I didn't get the more watch-like model. And I wanted the display face so I could just look at how many steps I'd gone, rather than having to look at my phone.
The Aria looks good next to my watch. Both are all-black, so compliment each other well... One's wide, one's narrow.
The features I like about the Aria:
* The display turns on when you turn your wrist to look at it.
* There are about six displays... Steps, calories, time, etc.
* You can cycle through them with a tap, and set in which order (and which shows up when you first turn your wrist –– default is the time, but I have Steps show up)
* LONG battery life –– about a week.
* When the battery's getting low, the remaining-life display becomes the default until it's recharged.
* Bands come in an assortment of about five colors, that are pretty typical for sport watches.
* The band is comfortable.
* It "celebrates" with a buzz and a little "fireworks show" when you reach your step goal for the day.
* The iPhone app interface for it is easy to use.
Things I don't love about the Aria:
* The band uses pin-and-hole. There are two pins. It's comfortable once closed, but it's harder than I'd like to close it. Of course, if it were easier, it'd be more likely to fall off; I will admit, I have NO concern about it falling off.
* The charger is USB, of course, which is as it should be, but it feels flimsy and has only a five-inch cord. I guess I'm used to iPhone charger cords, but I'd have liked it to be two or three feet long.
* This model does not count staircases "because there wasn't enough room for the altimeter." I think they could have found a way, even if the body had to be a little bigger.
* While you can cycle through the displays "with a tap," it often takes two or three before it gets the idea.
* The display washes out in even low sunlight, but is reliably visible indoors.
All in all I'm happy with the product and I'm glad I bought it. It looks good on my wrist and is comfortable and it's cool to be able to look down and instantly see how many steps I've taken. It does motivate me to exercise more, which was the point. :-)