I got the 245 for running. It quickly connects to satellites/bluetooth and I have found the distance accuracy to be quite good along with information on VO2 max and training effect. I use it with the Garmin Connect app. Then I started to wear the watch to track my sleep and found that helpful (surprisingly measuring my sleep helped me sleep better) so I began to wear the watch all the time. The other smart features, connecting to my iPhone and letting me see texts and alerts, tracking steps, recording my blood oxygen, resting HR, etc. are all nice information to have. The battery life is also good, probably 4 days and it charges quickly.
