Our church purchased this unit on the advice of my sales advisor. It met every requirement I had listed; remote battery monitoring (also on body pack), rack mount included, 150' range, easy to use.
We were able to use the mic we already had for our old vhf AT system, saving us 80-100 bucks.
Installation was quite easy, just some small screws to install the rack mount. Standard connections to the compressor (yes, directly. Very effective for consistent volume). Used the default frequency and the levels.
1. It is completely silent. 2.Battery condition is easily seen by the user and the soundman. Soooo much easier than testing the little things every time. 3. The sliding door is effective at accidental changes by the user. Our Shure unit was frequently disabled by someone changing the gain from "mic" to "0". 4. We seem to get longer life from the batteries, when compared to the Shure PGX unit. Can't be sure, though.
Excellent advice from Sweetwater advisor renders another excellent buying experience!