I have now to buy the normal microset of LD Systems and me the headset. The 1st set already with me uncomplainingly than 1 year everywhere. From the decor and the price-performance ratio here is unbeatable set (863 MHz band, pilot tone, 16 switchable channels, 3 simultaneously, gain control at the receiver, balanced XLR and unbalanced phone-type output). With the 2nd set I have a compatible system and thus security. Very positive is the high output level (switch the transmitter - switchable between MIC, 0dB and -10dB for instruments, stands with me to -10 db) of the system. I can easily operate the line input of the mixer (and have the 4 available MIC inputs such as free wired mics). The sound quality is more than adequate (voice playback). If that micro is not enough, can try via mini XLR another. Something improvable the cable length of the power adapter, (probably for rackmount sized). The package of the manufacturer is well padded very well suited (for the handheld mic) and for occasional use. Who wants to make sure buys more stable Case. For professional use for vocals, the system is probably only partially suitable. I have no experience with it, but the system I have not seen in professionally oriented music stores on the Internet and that may well have a reason. The reason is certainly not the price, because the music houses have also lower-priced systems listed. So just try again. I am very happy and it saves the budget of non-professionals.
Edit May 2015 Devices (now 2 in use) function immmer still properly. The headset is stable and suitable for children (coming in a school for use). Unbeatable advantages of system of LD are for me: a) Compatibility of handheld microphone and headset, which means you buy something after and always sets the one that you need. b) very high output level of the system at very low noise, constantly remain without any problems at the line input of the mixer (mic inputs with me freely) c) low tendency to feedback.