How many?, not many, but TBH, I couldn't find a simple way to seeing what, where, and how much stuff I had on my PS3, so the simplest option was £22 for a bigger drive.
xbox is a little different as any game install is completely optional.
TBH, I really couldn't be bothered downloading, deleting, re-downloading, I want to "game" with the minimum of effort, I want to turn it on, and play what I want, when I want, anything that adds any time to this (i.e. re-downloading DLC, or installing / download software updates) is a REAL turn off, my time is a premium, therefore anything I can do to ease this, I will do.
If I wanted to pee-ball around downloading patches and installing shite, I'd still be playing PC games!!!!