How do you like interface, does it feel intuitive for you?
I don't like the fact that if you are in one channel settings window, you can't go back to summary window using Back button. You have to press i.e. Utility button twice.
Why just not assign that to Back button?
I really like touch-up screen to the extend, I typically don't use physical numeric buttons. For example to set voltage/current:
1. Tap small A/V values (bottom line along Rigol logo)
2. Tap V field and enter desired voltage value using on-screen keys) ending pressing V or mV (no enter needed)
3. Tap A field and enter desired current anding pressing A or mA
4. Tap small A/V values (like pkt.1) to return to the main screen (Display).
Generally instead of small and inconvenient 'Back' button use Rigol logo in the left bottom corner of the screen.