this be my first gp watch and I could not be more pleased with it so far . the forerunner 305 feel well make and do not lose signal even when I run through wood . the best part in my opinion be be able to easily download all of the datum from you run when you get home and even overlay you path over Google map and Earth use free 3rd party tool . it would be nice if the watch be smaller , but it be light enough . other than that I would not change a thing .