We waited for ever to get better HSI in our area and Mediacom came in last summer so I signed up. I had hear so-so things about them, and the first couple of months were bumpy with speeds. They overexpanded I guess.
Things smoothed out, and around Dec they updated my speeds from 150 down to 200 down with no more cost, but since then the variance in what I get is consistently lower than it was download wise. For a couple of weeks now the best I can do is about 60 down, where it was running in the 150's, but they say nothing is wrong.
So, ATT came in a few months after Mediacom with fiber, and offers gigabit for a very good price. I signed up for it last week and have an install on Thursday. Be curious to see how close to 1000 down and up I get, and if it is more reliable than Mediacom. Ive been happy with Mediacom tv and their tivo, but for what I am paying for 200 down advertized, I can get a gig down from ATT.