For what it is worth, I am a new DirectTV customer (as of Monday the 12th) and am disappointed in the sports pack. ALL professional games on RSNs are blacked out with the exception of the Carolina Hurricanes games which air on my local FoxSports that I would get without the SportsPack. This leaves a handful of miscellaneous college games and regional high school games and the RSNs re-runs of Best Damn Sports Show Period and Poker.
Personally, the channels in the pack that I would watch are NBATV, CBSSports (They air a few ECU games), and ESPNU. I do not know why NBATV and ESPNU aren't part of the basic DirectTV line up while MLBTV is.
Also, in our region if you are planning on watching the Charlotte Bobcats games, you will not be able to. DirectTV neglected to pay the extended market viewing fee, so only those 75 miles from Charlotte can see their team play. If you live elsewhere in NC, Bobcats games are blacked out, even if you pay for the NBA Leage Pass.
Rad is absolutely right, I couldn't even watch the Dallas Mavericks pregame show earlier this week as it was blacked out. I would look at a few nights of programming for the package and see what you would actually watch to justify the costs.