MobilePhoneHeaven.com - Quite good from a keyword point of view, but the length damages the value. low to mid $xx IMO.
SportsTheory.com - Good for branding, but not much independent resale potential. Low $xx, undeveloped.
ChannelWave.com - This is by far the best one. It would be excellent for a satellite TV site, and is very brandable. You'd probably get at least low $xxx for it.