I have an Instinct 2. It pairs nicely with my 550+. I like it all.
My gripe is my glass prescription that lets me see at distance, makes watch/phone/controller all just blurry enough to be annoying. I have to take my gkssses off, or look over the tops to clearly see. It sucks getting old. Need to get a zero magnification bottom bifocal.
Here is what is awesome about the watch though. After you are chasing a downed rooster with it being 5 degrees and 35mph winds through a cornfield and recover him after quite a rodeo (dogs in truck while walking a productive ditch), you realize you lost your phone.
After you and 6 buddies give up the search, your brother in law says “use your watch”. No kidding?
Buried in the menus is a “find your phone” icon. Enable that and it becomes a game of hot/cold (if you’re in blue tooth range) and it took me right to my phone, 50 yards out in the corn field where I was chasing a rooster.