I switched from Optimum and my online scores are off the rack... Its a million times better and actually cheaper... However most of those offers they throw at ya to switch, like free tablets are gimmicks, but the free check was legit..
As far as cutting off and outages, yeah I've gotten a few, way more than with optimum, but they usually last a few secs where I reconnect on my wifi...
But to me switching over from Optimum was no brainier that I never regretted doing..