Hubby was at the sports shop for something else, and wandered over to check out the Forerunner 10s, as I'd been talking about getting one, but dithering between that and a fitness band type thiny. The sales guy was in the process of adding the 15's to the display and xplained that its basically a 10, with the Vivofit activity tracker module added.
So, I went and bought one ! Timing is bad as we're heading off to a 3 day conference this weekend - today's planned activity is 8 hours sitting in a car, so no point trying it I think...
Anyway, as its new, I'll try it out for a few weeks then try to remember to write a review. I'm not entirely sure I'll wear it all the time as an activity tracker as its a tad chunky. (I got the small model in purple, but its still not very small.). I paid 150 Euros at Decathlon in France.