6120: http://www.motorola.com/Consumers/US-EN/Consumer-Product-and-Services/Cable-Modems-and-Gateways/SURFboard-Cable-Modem-SB6120-US-EN
5101: http://www.motorola.com/Consumers/US-EN/Consumer-Product-and-Services/Cable-Modems-and-Gateways/SURFboard-Cable-Modem-SB5101-US-EN
I have Charter cable internet. Currently I have the SB5100, and last week I clocked in at roughly 5.5 megs/sec. The modem has been going off intermittently (its 5 years old) and I'd like to replace it. My two options are the 5101 and the 6210.
The 5101 is 53 bucks on Amazon; the 6210 is 88. The 6210 is advertising lots of "new features." I'm wondering if there would be any speed difference between the two. Or would I be paying 35 bucks for features I'd never need?

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