You posted 6 months ago and are probably no longer in the market, but it seems like the new Enduro has a number of the features everyone has been talking about that would enhance the 945. So while not the 955, it has multisport, long battery, solar charging, hefty price tag, yada yada
https://buy.garmin.com/en-US/US/p/702797/pn/010-02408-00#specs


But it is 20% heavier; probably a 20 minute penalty in an Ironman