Ive got 5 and rented another 7 for use for a tv filming special production, the camera crew loved them, apart from the moment when the focus puller pushed the mic behind her head and all everyone could hear was the audience behind her laughing.... the range was good we had video village downstairs under and behind the stage and the range worked to bo office at the from of the building. they're not as robust as tecpro/asl wired but more affordable than most wireless systems, only downside is they are limited to 16 headsets maimum.... however when I need more I rent in clear com system from CT for 32 headsets... and that's a much better animal but much more epencive option. yes theyre ok for an average volume but not quite isolated/volume for pit festival work..... but for small theatre/musicals/type thing great. but order a spare set of batteries they last a gig, but having spares if your running from event to event.. ooh yes we've also used them for corporate events, when the lx was in the box and sound was FOH and video was side of stage and FOH had a set to hear how we were getting on.