Hi JasonTL,
Just thought I'd throw in my two cents. But we've deployed a couple Bluetooth modules for the folks that are hear impaired, and with their hearing aids being Bluetooth compatible we thought we'd give it a try. Ones installed and paired, all seemed to work surprisingly well for their needs. I had my doubts on em' at first like they'd be some kind of "As Seen on TV" gimmick, but nope, they've worked quite well. Obviously the range of DECT versus Bluetooth, DECT wins. But nice to have that Bluetooth option.
Thanks,
-Iron