My iPhone 4S is only 16GB (which is only really 13.5GB) and its my work phone. With my work stuff, a few apps and music ...that 13.5GB is filled up. I'm always deleting old stuff to put new music on. I also can't fit any movies on it.
I'm after a bigger iPod touch, preferably 32GB or 64GB so I can add movies onto it and also put music onto it without compressing it too much. With my music I really want to rip CDs at a higher bit rate (like lossless) and not have to worry about space on the iPod/iPhone