I can’t recommend a watch…I too have been trying to find the right GPS watch for my needs (swimming, cycling, running) for a long time. But, the website DC Rainmaker (https://www.dcrainmaker.com) is an independent, longtime, trusted reviewer of fitness, technology devices. You might find what you’re looking for there. — Dan
If you want bells and whistles there are many good choices, But if you want simple I use an Ironman. I find it easy to do intervals with, it is rugged and long lasting.
