Haven't used Turo in the US, but we used it in Europe a couple of years ago, and it worked out great for us!
It was sooo much more affordable than going through a regular car rental place, plus we met some really nice folks when we went on a bit of an adventure to pick up the van in a non-touristy neighborhood outside of Munich.
For those concerned about insurance, Turo offers an opt-in plan. Back when we rented there were 3 different levels to choose from and it was through Liberty Mutual. We didn't need to file a claim so I have no feedback on that process, but the plans themselves are legit.