Conclusion

Nearly all analog PC TV tuners perform equally well.  They tune to a specific station, and allow your PC to record it, or time-shift, and its simply as good as the rest of your computer and the PVR sfotware. 

The nVidia DualTV MCE has brought something entirely new to the HTPC world - dual very-high-quality tuners and a powerful A/V processor, plus excellent stability with MCE 2005, all in a single PCI card costing just a tad bit more than other single-tuner HW-encoder cards.   Image quality was superb, recording and playback performance was seamless and buttery smooth.  The remote control worked as advertised, and integrated well with MCE 2005, controlling external devices such as set-top boxes.

Overall......98%

Okay, nVidia.  You did very well on this one.  Next, please create a card with dual ATSC and QAM-enabled tuners, and HD Radio tuner as well.  Then, offer it in both PCI and PCIe.  Cut cost by leaving out the remote, but offer a cheap IR and a high-end RF/IR remotes separately.  Now that's a winner.