The watch that SF has would be cool and I could see that being my next computer solution.
I've been extremely pleased with mine, and stopped feeling any need for an Edge once I got one. It has just about every feature in an Edge, plus stuff that's useful for hiking, swimming, running, and everyday life. Like the text and email and phone call alerts in an Edge, those are useful in a watch, too. I get home, put my phone on a shelf or the charger or whatever, and I get my texts on my wrist, with the same device that tells me how fast I'm skiing, or what time it is when I wake up in the middle of the night and wonder if I can go back to sleep.
I'm willing to give up a little screen size for all that.
The thing being able to vibrate on your wrist when it needs your attention works very well.
^ Scar is from a wasp.