Well, of course it depends on what you're using it for, but I got the 16 GB version for myself because I am planning on streaming nearly all of my media, be it at home or away. At home iTunes home sharing can access all of my music over the network, and away, iSub (a Subsonic client) streams my music over the internet. I'm at work right now with my 16 GB Wifi only iPad tethered to my Captivate and streaming music from my home computer.
As for video, I haven't gotten to play with it enough to make a final decision, but I do have VLC Streamer set up right now and it seems to do a pretty good job of streaming anything I have on my home network. As for streaming over the internet, I have worthless Time Warner, so I get about 256 Kbps upstream, so I haven't bothered. I can use that 16 GB to load up a few shows or a movie or two if I travel or anything though.
Granted I haven't loaded it up all that much, I have most of what I need (until jailbreak comes out) and I'm using about 800 MBs of my 14 GB available to me, so I think the 16 GB version will be just fine. Would more space be nice? Sure, but I'm not paying $100 just for another 16 GB of memory. I think that's a little crazy.
As for video, I haven't gotten to play with it enough to make a final decision, but I do have VLC Streamer set up right now and it seems to do a pretty good job of streaming anything I have on my home network. As for streaming over the internet, I have worthless Time Warner, so I get about 256 Kbps upstream, so I haven't bothered. I can use that 16 GB to load up a few shows or a movie or two if I travel or anything though.
Granted I haven't loaded it up all that much, I have most of what I need (until jailbreak comes out) and I'm using about 800 MBs of my 14 GB available to me, so I think the 16 GB version will be just fine. Would more space be nice? Sure, but I'm not paying $100 just for another 16 GB of memory. I think that's a little crazy.