Sony PSP

I have my Sony PSP but yet there's not many game inside it, just yet. The memory card is full but there's only 8 games in it. All the games are in a very big size,like almost 800MB for each game. And last night, I manage to download Football Manager Handheld 2008 and the size is super small compared to the games that was pre-installed by the seller. Its just 30MB. See what I mean. Which mean that if I download it myself, I can save more space and can have more games and what important is, I like the games. So I am in the middle of arguing with my own self, to delete or not to delete the pre-installed game except for the Pro Evolution Soccer 2007 (the size is 739MB) unless I can find the same game with the smaller file size, with the same quality. But, But, But.. according to my Mr BF, the bigger the size, the better the graphic and more details and more complicated... I tell you what, I know what he means but I want more games and it is still better to me if the size is smaller. Well, I am not the IT girl but I am not that bad either.. I know what I am doing and thats important... hehhee.. I just want more games in my PSP.

ps : can somebody tell me where to get the free PSP games download. I got few sites but it take ages to download it