Which smart watch to choose?

Question

Mobile devices

The smartphone is big, it’s too lazy to get it out of your pocket every time.
What you want: read incoming SMS and e-mail, see the number of the caller, the ability to write your own widgets (a simple display of some indicators from the server).
What is not needed: color, sound, pedometer, heart rate monitor, etc.
According to the descriptions, Pebble is most suitable, but I want something elegant, such as Samsung Gear Fit / MyKronoz ZeBracelet 2 / Sony SmartBand Talk SWR30, or vice versa, very brutal, but not cumbersome.