Haven't used a system that wasn't 2.4 GHz for years with the Line 6 Relay but since I had more issues with range and dropouts I decided to go back to a system that didn't use the 2.4 GHz band.
It has not been disappointing, I am glad I bought this unit, it is easy to set up, create a link by frequency scan and customise the name with top sound.
Have been using it for 2 months now and not once have I encountered an issue or dropout.
The only thing I wished they would've added to the transmitter would be a charging system rather than AA batteries, but at least the batteries can't fall out of the transmitter due to the excellent design.