Amazon are doing a £190 deal with LBP and a 4GB memory card and its pretty tempting because its a reasonable price with a game i want. However, is 4GB enough? I dont plan to be downloading any games digitally, i will always play cart versions. I also have no interest in downloading old games or using playstation plus. However, i am aware that they have some free games that might pip my interest which is where my original question comes in. How big are some of the free games? Will 4GB be enough if i primarily just used cart copies of games with maybe a few extra space for some MP3s?