Strengths: Easy to use, smaller and more watch like than previous versions, picks up satellite signal OK. Quick and easy to load send info to the computer, no wires attached. No loss of signal in wooded areas or built up city areas.
Weaknesses: Battery life not so good. Garmin Connect website always runs very slowly, but Garmin Training is really great.
Overall: It's a great piece of kit that I'm really happy to have bought.