I currently have three deco S4s connected wirelessly around our house and it works great.

We have Virgin media broadband with their hub router (in modem mode) connected by Ethernet cable to the primary deco S4.

This week we are replacing Virgin with Onestream broadband (67mb on Openreach). Onestream provide a basic router - the tp link 300 which I've read that it's quite poor and is limited to single band (2.4 GHz). 

I would like to have a similar set up to the current VM modem set up and was wondering what would be the best modem or hub to buy to replace the one provided by onestream? Ideally I don't want to spend a lot of money on it seeing as it's only a modem. Could I just buy a second hand Openreach compatible modem from eBay that is compatible with Onestream and, if so, what modem or modems are recommended?

Thanks for your help 🙂