There are no expansion slots. I had the same quandary on what version to get, for both Quest 1 and again for Quest 2. For a new and basic Quest user, 64GB is probably going to be more than enough to get you by until the Quest 3 comes out. Quest games do not take up much space, maybe a gig and some at the most. Hopefully in a few years when the Quest 3 is a thing, it will have more space on the base version which would be your natural step up to migrate and fit your existing library with room to spare for another couple years of growth.
I have had the Quest since day 1, so I have amassed a modest library of games that had interested me and plan on picking up quite a few more games over the next two years. My Quest 1 has 128gb of Storage but by the end of the year I suspect I will be at or close to exceeding 64GB of Storage without managing my space like getting rid of demos and stuff I don't plan on playing again anytime soon which there is plenty to cull. Now that I look back at it, I wish I just went with the 64gb version and didn't spend the extra money since my Quest 1 was going to be replaced in 2 years before I got to even fill the thing up or worry about managing space...
-If you plan on loading up your quest with 3d videos to playback and having a large library of games/apps at the same time then the 256gb version is a must. 3D movie file sizes can be massive.
-If you plan on buying up a substantial number of games or the majority of the Quest library then you probably have enough money to buy the 256gb Quest otherwise the 64GB will probably carry you just fine until you upgrade to a newer Quest if they keep releasing them in such short lengths of time.
-If you plan on sideloading unofficial apps/games/files then the 64GB space might get exhausted much sooner and a larger storage such as the 256gb would be more appealing. I do believe Oculus does plan on at some point to create an app store just for unapproved apps/games.
https://uploadvr.com/sideloading-quest-how-to/
Facebook is requiring a new step to sideload content on the Oculus Quest standalone headset. This change begins October 8.
venturebeat.com
Here is a useful link that references the file sizes of many of the Quest titles available on the app store to give you a good idea of just how small they are.
Now that the Oculus Quest review embargo is up, the flood gates have basically been opened. The Quest is officially launching on May 21 and you can pre-order a headset for $399 starting today. You can read our full review of the device right now and take a look at
uploadvr.com