I Need Help on Wether I Should Purchase a Console or Not

Hi guys, I have owned Xbox 360 for about five years. Recently I have become more and more intrested in the ps3. With games like Uncharted 2, LittleBigPlanet, Rachet and Clank, Motorstorm, MLB The Show and many more, the system seems like it has alot to offer. So my question is do you think i should purchase it or spend the money for more xbox 360 games (I own about 15-20). Is there a large enough difference in the 360 and ps3 for me to buy a ps3. Please note that I am not that much of a movie watcher so I wont be using the Blu Ray much. I want to know if there is a big enough difference in the graphics, game library, and other game related differences.

 
I AM NOT TRYING TO START A FLAME WAR!!!    

There isn't a huge difference. If you really want to play PS3 exclusives, then you might want to consider buying it. But there isn't really a huge difference in graphics or the game library, so it'd be easier to settle for the Xbox 360 for now.