Hi Tom,
You also mention Presonus Studiolive as an option.
You’ll find a few of us on here have moved from presonus to QU.
The studiolive is a great desk, but I suggest you trawl the presonus user forums for reliability issues.
In the end I couldn’t trust mine in a live situation.
I love my QU16, great sound and not too difficult to learn to use it.
Cheers
Martin