Just curious, how many Sage'rs are here?
I'm one.
I use SageTV for PVR duties because I have two digital cable boxes and two HD-PVRs (which MC's integrated PVR functionality can't handle). I also prefer, generally, the "unified guide" system in SageTV with multiple tuners. I have 6 actively used tuners:
2x Analog NTSC tuners
2x Digital ATSC tuners
2x HD-PVR connected to Motorola digital cable boxes
I'd love to use a CableCard device instead, but Time Warner sets basically everything to Never Copy so they're completely useless for me.
I have no Set Top boxes at all: My TV is connected ONLY to a HTPC (okay, I have an AppleTV too, but I can't remember the last time I switched to that input).
MC handles ALL playback and media management. The
only exception is when I watch "live TV" (which never happens in practice because I'm not a sports-guy). The SageTV UI is a steaming pile of fail, and it is unstable and troublesome, but I live with it because I want to keep the tuner setup I have.
It takes some maintenance to keep SageTV running well and recording without going belly-up frequently, but it works well enough until JRiver improves the multiple-tuner support in MC.