I was told I needed a Modem Upgrade during my troubleshooting

I currently have an XB7 (pnCGM4331com). I was told to upgrade my modem. I also recently got a notice about system work happening on 9/22/26 in my area, Trout Gulch Rd, Aptos, CA. I’m wondering if I should be upgrading to an XB8 or XB10? Thanks