Read this "Are you new?" FAQ: http://www2.create-games.com/faq2.asp
One thing to note: TGF2 and MMF2 are coming out soon, so if you decide you like the products from the trials, it may be better to hold off your purchase until they are released.
"Omg. Where did they get the idea to not use army guys? Are they taking drugs?" --Tim Schafer on originality in videogames