I run Poker Office, and their HUD has a couple of cool features. It shows the pot odds
and also the percentages of your hand improving to a set for example. It will list things like percentage to make a straight, flush, two pair, three of a kind, etc. and how many outs you have. It also shows the best possible hand that can be made with the board.
Although it obviously can't tell what your opponent has, you should be able to put them on a range of hands and use the information that it provides to make decisions.
IMO Poker Offices HUD and Hand Tracker are better than PAHUD. It also displays all of villains stats directly on the table like PAHUD.