xr11 vs xr15

Will the xr11 remote work with the newer xfinity equipment, specifically the XG1v4-A DVR? And can I trade my remote for one at xf store or online?

Also I have a newer Samsung smart Q60 TV and a 6-7yr old Samsung smart TV. Will it pair to those? (obv need two remotes)

The answer may be somewhere in a forum post I can't find a direct answer.

I have arthritic hands and it's hard for me to press the buttons on xr15remote; I have to use a pencil to press the arrow buttons.

TIA guys and gals

*tony