Q: i am mainly gunna use it 4 gaming mainly 1st and 3rd person shooter
A: Really it depends on what you want to use it for. If you want a system purely for gaming and want a good game library now go with a 360 all the way. The PS3 is a great media center though. I feel its a bit lacking right now in the gaming department, but another year or so and it will make up some ground on the 360. If you don't care about the other features like the BluRay player and such then its not really worth the money imo but if you are going to use all the features it is a great buy.