I like the cash app slightly more, since it doesn't publish transactions to a friend network by default. The network effects are still in Venmo's favor, though, so I definitely carry both.
I have a similar experience. I prefer the Cash App because it's visually more pleasant to use and I don't have to publish to the whole world that I paid my roommate $5.76 for lunch. That said, everyone in my circle of friends uses Venmo and I've turned off all of the social aspects so it works just fine.