I already had my own modems & routers. The Bell "2-Wire" modem/router had to go back.
For several years, I was using a GNet BB2060 modem and a Netgear router (a Factory Direct refurb special); never had any connection troubles with them.
Now, I am using a combo modem & wireless router, a TP-Link W8960N and it also works fine. I switched just because it was newer, and the price was right (I'm storing it for a relative)! It is actually slower by maybe 60 Kbps on speedtests than using my GNet/NetG pair. I have no QOS or other fancy features enabled.