Quick question about xbox one

[Loueytb3]

I want to buy one today while they are all on deals. But do I need 500gb or 1tb? And what accessories are must haves? I guess I need another wireless controller but is there anything else?

Thanks that's really helpful. The 1tb are still quite a lot more which is why I'm wondering if its worth it if we won't actually use all the memory. It's for my DH but my kids will use it as well

Thanks redannie