JRiver is worth a look. It does produce a better image than WMC can due to its use of LAV filters for live TV and recorded TV playback. It is cheap and it is has its own server built in. The Guide is a bit wonky but it is usable especially if you are dealing with the hundreds of guide listings you would have with combined OTA and Cable together. It works with a WMC remote.
Samsung 78" JS8600, Mits WD-92840 43" Samsung 43ku7000 - Lumagen Radiance XS, Martin Logan Motion 40s, Ascend Sierra 2s
58" Panny Plasma -DVDO DUO, Usher S520, JBL HLS-610, Definitive SM45, MusicHall Marimba