Well after experimenting with different live tv methods for fast channel switching, I'll put my 2 cents in.
1st off, has anybody ever fucked with HDHomerun Prime?? Its pretty much a digital tuner that accepts cable cards from your cable provider, Time Warner supplies them for only $3 a month. But you get a fuck load more channels with a cable card than with out one. Clear Quam channels legally.
For those looking for fast channel switching, WMC (Windows Media Center) is the best way to go. The most reliable way to run WMC is if you're running a Windows OS (Win 7 or Win 8). It didnt work that good on OpenELEC or XBChuntu (linux based). And it probably wouldn't work that good on an android based system, but theres no harm in trying. Its a lot better than every PVR out there (ie: MythTV, NextPVR etc). Faster channel switching (probably like a second to switch) more stable and more reliable.
To run WMC as a backend in xbmc, you will need to install QuickWMC.
Found Here:
http://forum.xbmc.org/showthread.php?tid=171216
By installing QuickWMC, you will be able to open and close WMC within xbmc's main menu instead of shutting down xbmc and launching wmc. Visa Versa
I have this all set up on my laptop right now but I'm fixing to get an Intel NUC at the end of the month.
good looks for the siccness members, I would have never found out about xbmc if it weren't for you.