IMO 10ms delay between transmitter and reciever is enough for you to feel "off" when playing.
Plus the transmitter hanging off the body and off the amp are just begging to be hit/bent/broken unless you don't plan on moving at all on stage (or plan on nobody else moving on stage to hit the receiver in your amp's input). Plus the idea of only a sealed up rechargeable battery means if the battery sucks, you'd have to get a new system.
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