andrewducker | Anyone got an opinion on smartwatches?

I've been looking into smartwatches recently. I quite fancy something that I can have on my wrist, pick up basic notifications, play/pause Spotify, etc., and thus only take my phone out of my pocket for more active surfing/emailing/status updating/etc. The Pebble looks pretty good - It's e-ink, so the battery lasts a week, and it seems to have a lot of nice functionality. But the interface is button-based, so it's not quite as nice as a touch-screen would be. A friend over on FB pointed me at the Sony SmartWatch 2, which also looks rather good. Touch interface looks nice, but the battery only lasts 2-3 days. Anyone got any opinions on either of these? Or suggestions for something else I should look into?