Would be interesting to hear from anyone who's tested mutilple devices. So far I've heard lots of positives but also a few negatives around forgetting to tag, time to tag and also the accuracy which then means extra work once you are back.
2016 should see this tech space get more crowded with several additional systems:
Plus I don't think it will be long before some one does some cheaper versions which simply use your phone GPS, phone NFC & some cheap NFC stickers that you stick on your club shafts. Free idea for anyone interested