Poly #1 - lots of buffering issues. Poly would continuously drop out and then fall off the network/hotspot using Tidal, SD card through 8 player and I would only get 2 seconds of music through Roon before disappearing from the network. I exchanged it for another Poly in the event that it was faulty.
Poly #2 - Had it for all of 3 hours. I got it home, un-boxed it and went to put it on charge when I noticed what sounded like a brick rattling about inside. I presume the battery had not be properly secured. Took it back and the retailer had no further stock. I took back Poly #1 in the event that the FW update would sort out the problems - it did not. In fact it made it worse as it would no longer connect even via bluetooth.
Poly #3 - After 6 weeks of becoming increasingly frustrated with Poly, my retailer got new stock. I exchanged it, and since then (about a week), Poly #3 has seemed to work pretty much flawlessly (exactly the same settings as on the previous Poly). I still get about one 10-30 secs period of buffering over a listening period of about 4 hours and I have also had a couple of instances where Poly has not turned off. I have then gone into config mode to reset Poly and all has been fine.
I understand that Chord want/need to iron out all the firmware issues before considering replacing units as they won't want a 1000 working Poly's returned but it's been a frustrating process.
I do have to say, their email support has always returned my emails in a timely manner and been very helpful. At the point they could help me no longer, they did suggest to replace the unit.
I'm now a happy Poly user and I look forward to the App and Chord making all the other users happy customers.
Merry Christmas everyone!