I had insight a few years ago, I didn't mind their HDTV but there wasn't a whole lot of options.
Anyway I divorced and moved, stuck with insight but kept Internet only and used an ota HD antenna for local channels as I'm not a big tv watcher. However, I still haven't been a big fan of the spotty Internet service, (my opinion) poor customer service, and ever rising prices and fees.
My friends and some family recently switched to AT&T uverse and have been very pleased, so I made the switch as well. My installation is this Thursday, and Ill be back in the HDTV game, as well as hopefully better Internet service (I opted for their 18 Mbps downstream, coming from insight 10.0).