I drove 90mins to pick up a diffuser because I will be adding another xr30 to my tank soon. I hope my G4s last another 5 years...Ghostly,
The G4 with a diffuser is the best Radion STILL. I would live to find about 4 brand new XR30s. I would buy them immediately. The diffuser is such a simple thing, but very effective.
I have a brand new one for a XR30 G5, but that won't help you.