Thanks for the feedback!
Don't know, maybe it was a bad batch. Phones were built in 2013, installed early 2014. Half of the 5330e were bluetooth handsets. We had probably 10 or so regular handsets fail, no one could hear you.
What issues are you having with the 6920? I have two and haven't seen any issues, yet. One's at my desk even. I have two 6940s and it's my favorite so far. Can buy them online for $265, pretty good value. My dealer wanted over $420! lol
The 6930 doesn't come with a bluetooth handset, right? Seems like it's better to go to the 6940 if you want wireless handset. I'll pull the trigger and buy about 20 of them once I figure out if I want 6930 or 6940.