What do you intend to capture? I mean, you *could* keep your current HD box and use a combination of PC, Hauppauge HD-PVR, and any DVR software you like to do recordings.
Having used WMC before there were cablecard tuners (forcing me to use capture) and now having the luxury of a cablecard theres no way I'd voluntarily go back.
For one thing you can only record/watch one channel at a time with capture. On a cablecard you can do up to six at once, depending on the device you get.
Secondly you are dealing with IR blasters, which aren't as bad as their reputation but are also no where near as convienent as an integrated tuner.
Third you are still paying for a set top box rental (unless you plan on buying an HTPC, buying an extender, and then buying a capture card to capture that extender's output).
Originally Posted by archiguy
You wouldn't be saving the HD version then - only SD through component/composite. So, who cares?
You could capture in HD and 5.1 with component/toslink and something like the HD-PVR. Not that I'm planning on it, but it is theoretically possible.