The DiGiCo is absolutely bomb-proof. I have been on the front end and the back end of that console and have never had a problem with it. It does everything you want it to do.
The SD7 has to have one of the largest output buss counts out there and is arguably the most flexible system, as far as routing anything anywhere. And with the SD7s A and B engine we didn’t have to rent extra desks or engines for redundancy