I use a Behrigner UCA200 since my Allen Heath board has rca out.

Legendary, you must be sarcastic, the VLZ/VLZ Pro series of Mackie boards were the worst ever made, fader problems, pot problems. Go on the Mackie forums back when the VLZ was top dog and you would have seen so many threads on them. No one could figure out a working remedy.

I switch from a SR 24.4 to a Allen Heath GL2200 32, it's amazing how much more useful the AH is compared to the Mackie. Less headroom, but fuller sound and better faders. Plus you can choose all 6 aux sends to be pre or post, not just 1-4.