I use two systems Actor for several years now and I am very happy! It is a choice for the flexibility because with four heads and eight subwoofers can be almost anything you want. Is very reliable and simple plug and play! all this gives us 4.8kW facade and 116dB at 25m outdoors! I never had any problems yet I have sometimes made "fit in" but it is as a letter in the mail! I urge many of you to get one or two! At this price I do not know concurrency (perhaps now the actor DX but more expensive) If you find an actor of OCCAZ: Sautter above!
Steph friendly, sound engineer