This is how I've seen it generally play out:
1) Get Fios if you can
2) Get Comcast/Other cable provider for internet, get sucked into deal that combines TV for like $100/month.
3) First half of promotion ends, bill gets jacked up to max acceptable number
4) Second half of promotion ends, bill balloons to crazy town.
5) Call and complain, experience first-hand the horrors of Comcast service. Threaten to leave for DirecTV, listen to them give zero fucks.
--- decision point to either stick with Cable because you also have phone service or can't mount a dish or don't have that many channels/DVR's - or go with DirecTV/Dish ---
6) Get DirecTV and deal with the pain of setting it up, enjoy first year or two of super cheap bills and probably free NFL Ticket. End up with both at pretty much the exact same max acceptable point as step 3.
7) Comcast calls to offer deal from step 2 again. Rinse, repeat. Or stay loyal to DirecTV because at least they treat you nice while they take your money.