+1 to M-Dante. Although there are other options with MADI, ADAT etc, Dante seems to be rapidly gaining market share, and seems a lot more easily distributable than the other standards. I’d only go with one of the other standards if you\your venues had specific adat\madi etc hardware that needed to be interfaced with. The M-Dante card + DVS +a laptop with a NIC (100mb for 32×32, 1G for anything higher) will allow you to do your multitrack recording, as well as open up options for virtual sound check. You can also use it to interface with other Dante-enabled consoles to share audio, eg you can use your console as a monitor console, and send signals to another FOH\Broadcast consoles via Dante, and receive their returns via Dante and route them straight to your Stagebox’s outputs, something you couldn’t do with the Qu series. Adding a cheap switch will allow you to do the multitrack+FOH\monitor split at the same time.