eLofty DDs had a lot of problems when they first came out. So I went with TB DD. But now if you read that thread, you’ll see that everyone has issues eventually, possibly harder ones to even fix.
Personally I would not buy any of the current DDs available. Hub motors, if I had to. But if you put a gun to my head and force DD, then I’d go with the Boundmotor/elofty. At least if it breaks, you might be able to fix it / you didn’t lose as much money as you would have with the TB DD.