Avoid NTC at all costs if possible. If the place you are living at lets you choose, I would recommend Adelphia. Several of my friends have NTC and they are always having problems with it; it goes down for a couple days at a time, isn't consistent, and is expensive. It use to be $40 dollars a month per bedroom; not sure what it is now.
We have Adelphia and it rarely if ever goes down. It's cheaper for us too since we split 1 bill 4 ways($106 for cable/internet so about $26 a person) instead of having to pay $40 individually just for internet. I'm not sure if it would be as cheap or cheaper then NTC if you were living alone or with only 1 other person. However, you get what you pay for, so I think it would be worth the extra cost in my opinion. I've actually been choosing between apartments by looking at what internet service I'm allowed to get.