Presonus Quantum ES4

I got the Quantum ES4 to replace my old studio 1810c. First I was impressed by it's compact design which still afforded me more input options. The controls are relatively simple and the use of light displays to indicate levels and modes is very clever.
The absolute game changer on this interface is the automatic level setting. Users have the option to manually set channel levels but automation makes things incredibly easy.
I use a matched pair of mics but through wear and year they are not so matched any more. Used to take me a lot of juggling and tweaking to get their settings to match. Automate does this in 20 seconds.