HTPC is the way to go. It allows you integrate ability to decrypt encrypted cable TV and Internet TV in one user friendly interface, all controlled by a remote control.
We pay $65/month service fee for FIOS triple play, but had we rented Cable Boxes/DVR from Verizon, the same service plus equipment rental would have been $125/month plus taxes on the full amount. Instead we pay $4/month on top of the $65 service fee to rent a CableCard from Verizon and do all the decryption and distribution our selves through a home network and MEdia Center Extneders.
The math made sence for us long time ago, even factoring in the back then sky high cost of "rare" equipment, it was still worth it. Now a days, there is competition, and prices have come down significantly (Orignal ATI DCT was $380 for single tuner compard with Ceton InfiniTV4 quad tuner for $150 today).
For a $500-$700 investment one can really save a ton over time.
Typical DVR rental is $20/month, and typical Cable Box rental is $10 month.
We have 5 TV's, so to get a DVR and 4 boxes we would have had to pay $20/month for DVR and 4x$10/month for Cable boxes = $60/month, $720/year, $3600/5 years. Compare that with the $500 - $700 cost of an HTPC you can clearly see the savings.
6 TV's in the house on FiOS and we only pay $4.99/month to connect them all!!! Power to the CableCard and WMC7!!!