I have used a number of sennheiser products from high end to these and whenever I am doing an installation or buying for myself if any wireless equipment is involved I go straight to Sennheiser. If budget is an issue for some people these microphones are the best in this price range. The quality of the sound, the quality of the wireless signal, everything is beyond anything else on the market. I have had XS wireless stuff up against trantec models of around the same price range when there was a raging storm outside the venue and while the trantec's were virtually unusable the sennheisers had no issues what-so-ever! At this rate I don't think im going to go anywhere else other than Sennheiser for my wireless equipment.