I heard 32Gb is "only" $80 now. I paid $100 and don't regret it one bit. ^_^
It currently holds:
* 7 apps
* 1 full-length SD movie (bought from PS Store accidentally a couple of years ago)
* 1 SI swimsuit video (for testing... ahem !)
* 9 TV episodes (old Heroes episodes)
* 2800+ photos (family and babes)
* 19 Music Unlimited songs (stored locally for offline playback)
* 4 Vita game demoes
* 5 PSP games
* 7 Vita games
* 3 Vita cartridge game launchers (I lost all of 'em >8^/).
with 12 Gb unused.
It's difficult to explain but having all the games (PS3-type, PSP-type and iOS-type), plus web, movies, songs all on one device where you can swipe between them is a bliss. I do whatever I want, wherever I'm. No need to worry about battery life.
When I'm dead tired but still bored, I just whip out the thing and play in bed. No need to look for discs or cartridges, whether they are in the office or at home. I said on GAF that it's a little like floating in a bed of sugar water. It's not uncommon for me to play until I fall asleep and wake up in the morning. ^_^
I didn't go into DD voluntarily. It's just that I usually lose stuff, from wedding bands, PSP and games, to watches. So I guess I have to go DD for portable consoles.