4GB PlayStation Vita Memory Card
this should be your first memory stick
Its a good stick but the price is not cheap for 4GB. But if you can afford something higher or you want a larger card, get to the 8GB stick
ONLY If You're Going To Buy Physical Games
I bought this because I know it won't fit a whole lot of digital games but I rather buy the physical games just because I like the cases.SoI'll recommend this for people like me that only buy physical and don't like to buy digital game. But if you do like digital games I think you should get the 32 or 16 GB.
Not enough space...
When I got this, I had three digital PSP games and one physical PS Vita game. It probably can fit more physical games, but I want get some of the download only PS Vita games and some PSP games and there isn't enough space. I still have .8GB left, which can fit quite a bit of physical save data (Uncharted: Golden Abyss takes .064GB for save data). But I just think $20 is a lot for a memory card that will fill up quickly for previous PSP Go owners and new PS Vita owners that want to own some PSP games.
Cheap and simple
I didn't have a huge amount of money, so I opted for the smallest considering one is required to play games. I was glad to discover that it will be more than enough to suit my needs if I continue to buy physical media. Also considering Physical games are only on average said to be ~$5 more than their digital counterparts, I don't consider that to be to big of an issue.
Excited about Vita, disappointed over media card
While the Vita is an exceptional piece of hardware that looks to fill an otherwise vacant gap for gamers looking for next-gen quality gaming on a portable device, Sony's choice of media storage for the device is disappointing. Those of us who were loyal to Sony in purchasing several Sony Memory Sticks for our PSPs hoped Sony would in turn be loyal to their customers by allowing the Vita to use those same Memory Sticks. sadly, it appears an entirely new form of storage is required, and it's a bit pricy as well. Such is the cost of doing buisness with a new gadget, it seems... Stil seems a bit unfortunate.