The Oculus Quest 2 is available in two versions: 64GB [US$299] and 256GB [US$399].
The 64GB version is more than enough for many users, especially those who are primarily playing or demonstrating virtual sports.
However, as the available software for the Quest 2 is increasing constantly, you may want to have a look at all you can do with this device, and consider the larger model.
ALL MODELS [Amazon]
We recommend Amazon, because of their fast delivery and easy return procedure.
We also highly recommend a carrying case for your Quest, for protection and transport convenience.
There are dozens of available cases. These three are all high quality, but each has a different advantage.
One of the first two is probably your best bet. Number three is for mega-protection.