Pebble was the best. Was fun while it lasted. [*]. I'm counting days until my Pebble Time dies and then I'll be off the smartwatch game until something else pops up that's not just a toy or a fitness tracker.
I bought a Pebble Time Round after the company went bust at knock-down price and love it. Just waiting for the app/Appstore to die. Still working OK at the moment, though.