Originally Posted by BWG
If you opt for the HVR-1250, you will do it like you described in your example. HVR-1250 does not have RCA inputs (Yellow, Red, White Plugs), it has a single tuner and connects through a coaxial cable.
If you want, I can record a program clip in 1080i on mine and you can download and view it to see if the quality is good enough to suit your needs.
I'm pretty sure the HVR-1250 has either S-Video or composite (yellow) video input and a 3.5mm jack for audio. Recordings will be compressed so I suggest you go with the best connection possible. Coax is already the worst connection available on your cable box and splitting the signal even further would just make it worse. Since tuners in TV/cable boxes are generally better than PC tuners, you definitely want to go with the best quality connection you can get.
If you do go for the HVR-1250, my suggestion on managing the connections would be to use S-Video/composite + 3.5mm audio for the cable box and a straight coax connection to the wall. That would allow you to record HD content when possible (e.g. ABC, CBS, NBC, FOX) while still being able to watch cable channels on the cable box.