We changed out our Beta 58 mics for all RC35 capsules for our ULX system, and the results were astounding ! The capsules are clear, full, reject feedback like a mad dog, and look nice (all black) on the ULX bodies. We just set up a monitor mix yesterday at an event and we could literally get as close as 2 feet from the wedge before we started hearing feedback artifacts. Further use will reveal how these are going to work in day to day events, however we are glad we made the switch out...the proximity effect of the Beta 58, for those that don't know how to use a mic was killing the sound...
Couldn't have said it better myself. Enjoy and post more feedback!