I recently dropped Comcast, except for highspeed internet. I didn't have the triple play, but with HBO, etc, and paying for the HD boxes per month, my bill was up to $225/month.
HS internet is $42 without the rest. My new bill with Dish is $78 (No HBO). If you don't have HD service, it would drop to about $45-50. And it covers all of the channels you list above. I use Vonage for phone for $25/mth.
Comcast TV listings:
http://www.comcast.net/tv/tv-listings/
and channel lineup for Houston
http://www.comcast.com/Customers/Clu/ChannelLineup.ashx?lid=4ProgrammingChannelLineups&lpos=Nav