I can pretty much guarantee you that the STB's will be better in terms of useability and reliability. The only question is, how bad do you want to be able to record? Unless you're willing to pay an arm and a leg on Ebay for the Panasonic combo, HTPC is pretty much the only game in town for recording HDTV right now. The PC tuner cards can also save you money if you already have (or plan to have) an HTPC for other things such as video scaling or DVD playback, but building an HTPC just for OTA HDTV will be pretty expensive.