• I dont think I’ve ever read about a series watch ever having trouble with water durability. Personally, I used my series 5 for open water swimming, pool swimming, water sports, and daily showers without an issue (past the sport loop getting loose at times).

• the action button is nice but currently under utilized. Perhaps in future updates it’ll allow you to mark swim laps, but for right now it’s a short cut to workouts and segment marker. Other than short cuts, there is nothing it can do that you can’t work around on a series watch.

• the ultra works with any of the 45mm bands, but if you’re after fitness the ultra bands are great. The sports loop is also nice, and others enjoy the Nike bands for their breathability. The metal bands dress up better though!

• the ultra has not been offered in other colours. It might in the future, ie new iPhone pros.

• yes, the watch can call and answer without a cellular plan, as long as your iPhone is close by (perhaps also over wifi??)

Worth it, not sure... but if you can easily afford it.. go with the latest option anyway. Minor differences, but the new chip is seriously faster and there's a bigger chance that future updates will be a lot smoother and drain the battery a bit less than the S8

I personally have the S8 and going to swap it for the Ultra 2 later this year, so I took some time to see what to sell a 2nd hand watch for..

And honestly the S8 is the best watch to get second hand.. if that's however not for you.. I'd really say get the S9