My opinion on #5 is no, it is not worth it to have "back-up Comcast". The Directv is up 99.99% of the time. IF it should be down, you can still watch the programs you have recorded on their receiver.
Not exactly answering #4, but I switched from Comcast bundled internet to Embarq. Comcast kept going up and up, so I am now paying $44.95 a month for life, with no increases. Don't know if tax is included in that.
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