Strengths: Excellent features, light weight, simple screen navigation, good software and 3rd party software products available
Weaknesses: Limited memory. If you do multi-sports, in particular cycling then it's possible to fill up the memory quite quickly
Overall: This is an excellent training aid that is fortunately waterproof. It keeps going while you pass under thickly forested routes and has a wealth of information via the easy to read screen. There are also many shops that offer very large reductions on the recommended price.