I previously owned the Spartan Ultra which I loved. I knew this would be a slight dip in performance due to using GPS rather than Baro, but I didn’t expect it to be unusable for elevation training! My regular 500m route still measures 50m despite all the support from rhe Suunto support team. The wrist HR is pointless as it is so inaccurate - just adds bulk to the product and now I always use the chest strap. Positives - navigation is great, battery life is fantastic and build quality is next to none - what I’ve become used to with Suunto. Very disappointed with the negatives though - hopefully the firmware can be improved and fix the GPS issues!