Summary: After a lot of research including the reviews here, I decided this was the watch for me. I bought it in May 2013 to train for an October 2013 marathon. I cannot say it enough how PERFECT it worked. It is accurate, found satellites quickly (this may be a regional issue, my friend's in MN had significant issues throughout his training, I had none in CO). Controls were easy, and it was absolutely perfect for my training.
Summary: Was absolutely brilliant when I first bought it. However after about 6 weeks or so the location finder got slower and slower to the point where I sent it back for a replacement. (Amazon were brilliant about it) So, had the new one and within weeks again I sometimes have run 3 miles before it works out where it is. Performance increases slightly when you download your runs but overall I'm a bit underwhelmed..