If you've already upgraded to HDTV, you'll need to pay special attention to ensure that you're able to record and play back true high-definition video on your DVR. Only a handful of HD-ready DVRs currently exist, but the choices are slowly expanding.

Upside: HD DVRs offer the same convenience as standard models, but with the improved resolution of high-definition TV, saving you the trouble of complicated hookups and toggling between separate HD tuners and standard-def recorders. DirecTV users are limited to the DirecTV HD TiVo ($999), while Dish users have the Dish DVR 921 (originally $999, now $549). Cable users again have the advantage here: most cable providers will provide a free high-def DVR for the asking, though fees for high-def programming may apply. If the cable company's options don't fit your needs, you can opt for a CableCard DVR, such as Sony's DHG-HDD500, but be prepared to shell out at least $800.

Downside: A free cable box is a no-brainer, but paying upward of $1,000 (compared to $50 to $300 for standard-def models) is a tough sell. Another snag: Until Blu-ray recorders become available, it will be almost impossible to archive your high-def DVR recordings at their native resolution. Most DVRs do allow you to archive HD shows to standard-def DVD or even VCRs, however.

Outlook: While DirecTV and Dish are aggressively expanding their high-definition offerings, new programming in 2005 and beyond may require new hardware. For example, DirecTV recently announced it would be using MPEG4 to broadcast local HDTV channels, which current DirecTV HDTV receivers won't be able to receive. Be sure to check with your satellite provider or local installer about the hardware's shelf life before committing to any expensive equipment.