Mining or investment?

None of the above. Seriously. Do NOT do any of the above or you will lose money big time if you try to do any of the above.

It's glaringly obvious that you have no clue about what you are asking about. The reason is that you have not done your own studies to better understand the Bitcoin market and opportunities. Otherwise, you won't be asking such questions in a forum like this. The first rule of investing is - do not invest in anything you do not fully understand.