This is a discussion on Poker Manager? within the online poker forums, in the Poker Software & Tools section; what you think about poker manager?its usefull for tournaments and your game can be better?
1. HUD provides statistical information for the other players on the table and this can help sometimes when decision is 50/50
2. You can review your own game later using the database of the hands that you have played and this way improve your game and identify weaknesses
Saying that keep in mind that some of these softwares have rather steep learning curve till you learn how to properly use them and they can also be expensive. Holdem manager for example is around 100$. There are also options which are based on monthly fee if you prefer such way of payment.
My advice is to try a free HUD like easy poker hud and see if you can learn to use it properly. If you do that and it helps you you can later buy one of the more advanced options.