The wirecutter recommended SB6141 is only $70. I bought one for my sister recently. It “only” supported 50 Mpbs down, but my sister doesn’t need all that bandwidth. She doesn’t even care about difference between SD and 720p/1080p.
Price pays in itself after a year, just from rental fees. Also, if the modem starts to die out you can just replace it yourself rather than have the cheap bastards just send you refurb shitty units as a replacement.
I like two things. But I’m a control freak and I like to know which part is broken.
PS if you have trouble getting the modem to hand out an IP or whatever in the beginning, 90% of the time it’s because someone typed out the wrong MAC address in the modem when registering it.