The Pebble has an always on display that is perfectly readable under normal room lighting levels and also bright sunlight.
In darker rooms and night-time a simple flick of your wrist is all it takes to turn on the back-light to display the time, or navigate a dark house.
I had a basic Pebble, but have upgraded to the Pebble Time Steel, with colour e-ink display and metal band.
The standard watch faces are fine for some people, but I wanted a little more. I've some fairly basic programming skills (20 years rusty), and I've been able to create my own face that has just the elements that I want. I've had fun learning about: math for the hand movements; generating and displaying tick marks; adding vibrations for a basic chime; displaying battery levels.
Battery life sitting at about 9 days, which I could extend if I took out the second hand movement, smooth moving hands (and didn't update the whole display every second). When it's getting flat, I can charge it fully while having a shave and shower.
I'm more than happy with mine.
Why on earth would you ever need 30 fps on a watch?