Bought in the semi in Paris (199 instead of 267), I am fully satisfied. - GPS is quick to hang - The warnings are clear on the watch can be read easily by running - The heart rate seems measured even if I have to wait a bit so that it stabilizes (corresponds roughly to my ex Garmin but I have not tested both at the same time). Before the start of the Semi, it reported 145 beats per minute and 70 after 5 minutes.
On the negative side, the only one I found is the MySports website that does not add much in the analysis. I registered at MapMyFitness (the same database, nothing to do) when we have more opportunity (ar example, create a path and deduce the altitude!)
Compare to other watches, she moinsde functionality (I think the Garmin) but it does very well what is asked! Me, it suits me fine!