I have switched to fiotics from TWC. Hands down fioptics is the winner for internet. Make sure however that they are running you fiber and not tapping into the copper (they probably are doing fiber if they are currently pulling it in your neighborhood)
BUT - if you are happy with your current services, you may not want to switch. After that first promo goes away you are going to likely be paying over $200 a month.
Where I live, with the options I have available, and with the disposable income I have available, it is worth it to me.
First the internet:
This was my main reason for switching. You don't pay for download - you pay for upload.
The fastest TWC can do is 5Mb up and that is the 50Mb down (fastest service they offer $$$)
With my fioptics I have a 30x30 connection. 30Mbs both directions - I have never seen a bandwidth issue with 3 client computers, 2 servers, 2 xbox ones, 5 tablets, 3 phones, 2 rokus, 3 smart tvs, 3 smart blueray players, and 4-6 people actively streaming, hosting, and gaming from 7:00am untill 10:00pm
Fiber is awesome!
Second the TV:
The digital tv over fiber is also great. Crystal clear and the set top boxes can be run over network cables instead of coax.
You also have the option of running it into existing coax and running it directly into tvs without the extra boxes.
TWC just changed their services recently to where you need a box for every tv.
I love it, we have one main tv that we watch hooked up to a set top box with dvr service. They also have on demand and lookback services that are great.
Most other rooms in the house have a tv just plugged into the coax (6 in total) and they all pick up different amounts of channels based on factors like age and programming range.
Everything from old tube tvs, old VCRs, and brand new small LED tvs have worked fine in this manner.
Last the Phone:
Its a digital VOIP phone solution. It works.
We mostly use our cell phones for everything. The only reason we haven't dropped the land line is so that the babysitter has a phone to dial 911 in emergencies.
If it weren't for the fact that she watches my children and my brother's children at our house everyday, the phone would be long gone.
TL DR - fiber is expensive, but for me it's worth it.