I've recently switched from Notion to Roam, and feel good about adding to that hype. I can't judge between them as enterprise tools, but as personal note stash I far prefer Roam. Roam doesn't have Notion's awesome flexibility that the author of this piece describes. But for me it does the important parts better.

It's great to see the deep competition in this area. Even as a current Roam fanboi, I'll switch again with little regret when something better comes along.