Originally Posted by bull8042
Download the trial version of BeerSmith and play with it. I feel sure you will spring the $20 or so before the trial runs out.
I'd download the trial version of Promash first, and play with that.
Promash comes with an excellent tutorial, and doesn't have a limited time trial period. That way, you can take your time finding out what brewing software does, and then download trial versions of Beersmith and Beer Tools Pro, both of which have limited time trials.
You can then see which one best suits your requirements without running out of time.