I recently upgraded my modem router and am very happy with the performance.
The modem is:
Motorola MB8611 DOCSIS 3.1 Multi-Gig Cable Modem | Pairs with Any WiFi Router | Approved for Comcast Xfinity, Cox Gigablast, Spectrum | 2.5 Gbps Port | 2500 Mbps Max Internet Speeds
And the router:
TP-Link AX3000 WiFi 6 Router – 802.11ax Wireless, Gigabit, Dual Band Internet, VPN Router, OneMesh Compatible
Total cost for both was $340 from Amazon and getting download speeds of 230+ mbps here. Sorry for the massive type on my copy/paste not sure how to reduce the font.