Greetings,
You might think that the great new display technology that's available would bring about a new crop of excellent, high-quality, high-capability watches with gorgeous displays, but that hasn't happened because modern digitals are not seen as fashionable so there's no market. The smartwatch market may eventually pan out if they can get the size and battery life issues worked out. Most of the existing ones have been too large and ugly to wear but newer efforts like the Pebble seem to finally get it.
Anyhow, in terms of what is available now or in the near future:
OLED:
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1) Fossil
I recommend the Fossil JR-9464 (leather) and JR-9465 (stainless) OLED watches from back in 2007, if you can find one. The three color OLED displays are nice and bright and the watch features a useful calendar display and a number of fun little animation sequences.
You've probably seen the other models by Diesel, Apus, etc. Unfortunately the displays are a bit small. The Sony smartwatch looks like it has a nice display, but you have to charge it every 3 days. I have a cheap 6 year old Aigo F029, which has a beautiful 1.3" 160x128 pixel display.
E-INK:
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1) Pebble
The Pebble just started shipping, so it should become available in the next month or two.
http://getpebble.com/ 3) Phosphor
The phosphor watches have been out a while so they're easy to find:
http://www.phosphorwatches.com/World-Ti ... s-s/31.htm3) CST-01
Most of the neatest e-ink watches are still unreleased prototypes. I like the style of the CST-01 ultrathin watch. Hopefully it will survive:
http://www.kickstarter.com/projects/165 ... nest-watch -abe.