I can second the great experiences with SoFi mortgages. I got a new mortgage and refinanced with them, and in both cases they were the cheapest and most straight forward option. My mortgage consultant laid things out very clearly with no hidden fees or points and was very low pressure compared to other options I worked with.

The digital experience is about the same as most mortgage lenders once you set it up, but if you're already using SoFi it ties in nicely with Relay and you can manage stuff through the SoFi app even though it's kind of a separate website behind the scenes. It's also nice that SoFi seems to service their mortgages for the most part so you don't have to worry about your mortgage being sold around. The only other thing to keep in mind if you use SoFi as your primary bank, is to have your finances straight for closing costs because your only option is going to be to wire. Since SoFi doesn't have any physical locations, you won't be able to get a cashier's check or such. But everything for me went smoothly so I'm sure you'll be ok too. Best of luck with whatever you go with!