I was thinking about buying a Playstation 3 for myself, but got confused with the HD spaces. I read some questions on Gaming SE and they suggest that using something as big as 500 is more than sufficient. However, it is possible to upgrade the HD as it's just a fancy PC with Sony software and a 2.5" HD for data storage. My budget is a bit tight, so trying to compromise where I ideally can.
Because it is an HD and I can choose which game I can have, isn't it possible to remove old game data (i.e. the games that I have saved data for, but not been playing for a while) and free up space like we usually do in our PCs? For example, if I am not playing FIFA 2012 now, but want to play Destiny - could I not erase FIFA 2012 data and use free space for Destiny? P.S. I know that the PS3 OS will consume some space, so Ideally I will be getting something like 75% of the advertised space e.g. 8GB in a 12GB console?
Target games - I will probably be playing Destiny, The Last of Us, Call of Duty etc. I am happy if I can save one game's worth data in a 12GB console - I can simply start and finish a game and then carry on with another one.