Not really a sound-related question, but still a live-related one... We are planning a mixer upgrade with my band. We mainly play in clubs. We'd like to switch to a digital mixer, and have more aux for personal monitors. We are interested in the Behringer AIR models; good preamps, handy form factor, enough featuresfor our needs. I'd like to know your opinions regarding the control app. Main question is: is it usable with a smartphone, so with a small screen, or is a tablet (almost) mandatory? For personal monitor regulations I suppose a smartphone can be enough. But maybe controlling the main mix can be quite a pain with a small screen. Also, generic opinions/experiences/... regarding this mixer and similar quality/price digital mixers are welcome! Note: we are a 4 people band (guitar, bass, drum, voice).But it can be that the mixer will be used with more instruments in other projects.