I just wanted to mention that Arris has Broadcom bases modems as well which works well with the R1 router. I've had a 6121, 6180 and now on a 6183. All of which have had my R1 connected to it. Have not noticed any problems with these modems with the R1 at all. Also there maybe some ISPs out there that don't support all brands of modems so some users may not be able to use or buy a TP-Link modem which seems to be the biased norm here. I can agree with using what works well and for everyones experiences, however not all modems maybe supported and others do work well. Big thing for users to check for is signal on the line and using a dedicated Cable line should be used. Signal on the line is key along with using a good modem. I'm sure most modems work well with the R1 and TP-Link has good modems I presume. However there are other brands that work with the R1 just as well for those who can't use TP-Link on there ISP.
It's unfortunate that Intel as let the Puma 6 problem thru the system. Recent information from them says that they are working to correct the issues with the Puma 6 modems. I feel that it's probably a bit to late in the game for all of this however development and testing does take time and to get it all sorted out. I hope they will eventually get it all corrected.
There is a listing of effected modem brands as Arris isn't the only modem Mfr effected by the Intel Puma 6 problems over on the dslreports forum for those interested.
Hope for the best for everyone. Can't wait to see what the new DumaOS does. Waiting patiently.
