The VAVA USB-C hub is excellent, I bought one as a tester and ended up buying 2 more (home office and for mobile use), after I heard @RosemaryOrchard mention it in one of the MPU podcasts.
A welcome surprise was that display mirroring works with the iPad Pro 12.9 (USC-C model).
It will not charge devices connected to the USB-A ports, at least with my devices it didn’t work. It has a tendency to get a little hot but appears that it is in the design specs for it to get hot.
Gives the same bang for the buck compares to devices that are approximately twice as costly.
I’d say get this USB extension cable, it’s helpful if you have your MBP on a Stan’s, as the connection from the USB-C hub to the MBP is quite short.