I have now the clock a few weeks. Drove much wheel and run. For swimming I can not write anything. Did not have time yet;) So far I had no dropouts, even problems with the synchronization. All runs are recorded class and the heart rate monitor works without problems. I like best the autolap function. Just press the little buttons at a point of the track and we already started automatically every time you pass a new point of marked a new round. I find class function. Over mainly in the forest and had never GPS problems. Only what a little annoyed: the satellites are only found when one considers the clock quietly. Just start walking and waiting that the satellites are found, does not work. Now I let the clock start running are always in front until the satellites are found a little outside the window. What the hell. Cycling works wonderfully. Several bicycles are configured. Again, no GPS problems. Also was the set up of my sensors no problem.
Strong buy recommendation and have fun torturing :)
Addendum of 28/10/2014
Unfortunately, there are problems with the chest strap. It works only about 100 applications. Then it transmits nothing or only nonsense. Is known, the problem. Too bad the Garmin nothing improved. There are polar (Soft Strap) here a spare chest strap for approx. 13 According to customer experience keeps the better, and is compatible with the Garmin. Only needs to be slightly modified (rubber seal on the two clips must be shortened).