DCRainmaker review of the 830, search “861” and you’ll see that for a guy that lives in Amsterdam, the 830 touchscreen in the rain isn’t a problem. But hey, the next poster (#862) says his previous 800 was better in the rain. 
Structured training outside is better on Garmin. So good that I use my 530 on the trainer inside, one interface for all my workouts. Stable, fast, and a bunch of useful features that are not on Wahoo. Roam and the updated Bolt are good basic computers, but my iPhone only cost $20 more than a Roam.
More random thoughts on a TGIF… A lot of people I know still record and two rides - Strava app and Wahoo/Garmin - before deleting one of them, it seems nobody trusts their computer (I’m also seeing more lost rides on Bolt/Roam, but its popular). Using RideWithGPS and airplane mode I can get ~12 hours of battery on my iPhone. I’ve also used Cyclometer. Would have no problem using either of those if my computer stopped working. There are some interesting features on Stages Dash and Hammerhead Karoo 2.
TGIF and have a great weekend!