Ummm… not good… 
I even like some things kw88 interface as the connections menu (long press the power button) and the fact that have a camera.
But the question of faces displeases me … start thinking in D5 + …
@Antonio_Praca All these watches software work almost the same. Stock watchfaces should not be an issue. Especially with all the people working on getting customized watchfaces on all these watches.
Look at the design that matches your style. Quality wise they are all of excellent quality.
Some features may persuade you to pick a specific type.
Amoled, 400x400 screen, camera, ip67, memory.
The problem is there is no model that has everything that I value!
- Many custom faces (which also include battery status, date, steps …)
- Camera
- Screen 1.4
- Good synchronization with mobile phone
@Antonio_Praca Believe me, you don’t want a camera on a smartwatch. It will always be underpowered for the current standards. It’s more of a play thing. I’m a photographer and this camera has more flaws then profits.
I tried using it as a light meter, so I could automatically set the display brightness. That also didn’t quite work. (Needs some more looking into)
A good screen, preferebly amoled, 1/8GB memory>400maH battery. That are hardware specs to look out for.
@Martin_Nijhuis
Maybe… I like it but no camera and price will be for sure higher.
I think will try kw88 by $91 before its gone… 
@Kenneth_Tan
Excellent quality?
W806: Color chips off
D6: Battery cover is not closing 100%
I2: Fisth one died, second one has clouding
KW88: Bezel is broken, battery cover not closing 100%, color chips off.
And so on. Maybe i have no luck, but i doubt that 