I recently left a band where the soundman we used mixed from a Presonus mixer. My favorite feature was that I could control my own monitor mix from my iPad, simple interface and very intuitive. My newest project uses an older Mackie 1604. Some downsides are that we have limited monitor control, only one prefader monitor mix and of course running the snake and wiring is a hassle. I'm thinking of investing in a digital mixer and have been reading reviews, and looking at the interfaces. The only interface where I've seen the monitor mix is PreSonus. I've looked at QSC touchmix, Behringer X mix and Mackie master fader. I've been a fan of Mackie for years, my old 1604 even lived through a snifter of brandy, my 1402 has been running for many years without glitches. Behringer quality has alway been questionable, QSC has a good rep, Presonus also are great, but the mixer is fairly large and cumbersome. I have no doubt that Mackie Presouns and QSC will all do the job, the Behringer product isn't out yet. What is everyone's take on the user interface?