I'm buying a new wireless system for ceremonies. Love my old GTD system but it seems to have a problem with 5G phones. I'm needing a dual channel receiver with hand-held and lav/headset. I'd pretty well settled on a Shure SLX but it appears they've discontinued the product so now I'm back to square one on my decision. Wanted to raise a discussion here to see what you guys recommend. BTW, I do have a GTD in the 500-mhz range, but I've mis-placed the bodypack/mic. Is the 600-mhz range the real problem here? Thanks in advance for your input.