said by djrobx:
I haven't had problems with TWC, just this awful SBG6580.
The firmware update a few months back fixed some things, but it still intermittently "blacks out" - Internet stops. Can't contact modem's web interface either hard-wired or by its built-in wifi for 30 secs-minute. Seems to have one of these fits once a week or so. Same thing happens whether it's in bridge mode or in router mode. Sync is kept the whole time - nothing new is logged when access comes back.
A few options for dealing with SBG6580 headaches (same applies to other router/modem combos):
Cheapest: Disable IP Flood Detection and see if that helps
Better: Put it into bridge mode and use your own router
Best: Forget about it and buy a plain old cable modem and separate router. Recommend getting a DOCSIS 3 8x4 modem such as the Motorola SB6141. You can buy one, or stop by your TWC office and see if they have a plain modem without router/wireless that you can rent (but don't be surprised if they say no).
Interesting thing with the SBG6580 and other similar gateway modems... TWC uses these for business class customers with static IP addresses. They configure them as a plain router - no firewall, no wireless, and (most importantly) no NAT. They assign the customers static IP block to the modem's LAN interface, and then the customer can take over from there. They work perfectly fine in this configuration.
To answer the original poster's question, most people will not regret switching from 3 Mbps DSL to Time Warner Cable. TWC has come a long way in recent years on the Internet side. Although they could still be more aggressive on speeds (especially upload), they have become much more consistent. There aren't near as many complaints about night time congestion as there used to be. DOCSIS 3 has helped with this, along with other network upgrades. On the other hand, there seem to be more and more complaints from people who have old, slow DSL connections... including oversold networks which the phone companies used to claim never happened with DSL.
My view is this: If 3 (or even 6 for that matter) Mbps DSL is the best your phone company can do, they probably aren't investing in your area. Chances are, things will continue to get worse. Some telcos seem like they would rather have customers in un-upgraded areas just go away and stop bothering them. So, why stick with DSL in this situation unless cable is unavailable or even worse in reliability?
The worst part of TWC by far is the TV service. The software on their digital cable boxes still has a long way to go to catch up with where it should have been several years ago.
Tech support could use some improvement as well, but the same applies to virtually all major residential (and many small business) ISPs.