Re: Hold'em Manager or Poker Academy Prospector
Tracker wise I would recommend going with Holdem Manager. Poker Academy Prospector does not have a HUD as of right now. They have been working on a new version of the software for some time but I do not know when it will be released or what features it will have.
Holdem Manager will do everything you need it to do and it should run fine on your computer. The only issue you might have is that the tournament support isn't awesome. You might want to also check out Tourney Manager made by the same guy:
http://www.pokersoftware.com/tourney-manager/ It is a good product and complements HEM nicely with extra tournament tracking and analysis.
Computer wise, it sounds like you have a pretty good setup. The only thing I would really recommend doing is adding another gigabyte of RAM. It is so cheap these days and offers such a performance increase there is really very little reason not to have at least 2gb in your machine.
