I've always had DirecTV by itself and FIOS for phone/internet as a bundle. They've always made it cheaper to bundle it than to get internet alone, which is the only reason I keep the phone part. I haven't actually plugged in the home phone in months.
Do you have AT&T for broadband or wireless also?
Lastly, if you work for a largish company, check and see if you get a corporate discount. I know I save something like 25% off wireless service through AT&T based on my employer and all you have to do is have a valid address. It was the same when i was with Verizon as well. Neither offers the option for TV or home internet that I've seen though, unfortunately.
Oh also, you're probably aware, but with DirecTV you can often call and threaten to leave to get discounts or upgraded service. I've gotten sunday ticket for free for the year, free HBO and other top tier channels for free, just by calling and saying another provider ha better prices.
Happy to help review the options with you and tell you which way I'd go. Looks like AT&T requires your address in order to give you pricing. So if you maybe want to input that into their form and share their offers here?