The Shure SLX/SM58 and our ACT-311/ACT-30H would stack up very well together in many ways. Both have 24 meg bandwidth, 300 ft. range, detachable antennas, metal cabinets on the receivers, microprocessor controlled diversity, infrared setup for the transmitter, interference and battery indicator, XLR and ¼ phone outputs.
MIPRO has 5dB better dynamic range.
MIPRO has more than double the battery life, 20 Hrs. versus 8 on the Shure.
MIPRO has 16 interference free channels per band as opposed to 12 with Shure.
MIPRO has a 3k wider frequency response, not to mention using a more accurate MU-79 condenser capsule rather than the 50 year old dynamic design on the SM-58.
The rack ears are optional on the MIPRO 3-Series and Shure has adjustable output setting on the receiver that MIPRO doesn’t. But having an extra gain stage just adds another possible way to mess up the overall gain and signal to noise ratio.
Oh, and the Shure SLX24/SM58 package sells online for $600.
The MIPRO ACT-311/30H has an MSRP 0f $399.