Seriously, I don't understand these threads. There is already a thread about Vega. This is just another speculation thread, there is no new information. Most people can't answer those questions yet. In fact I have seen you give the advice time after about waiting for reviews before deciding to purchase a card.
You guys who said yes they are buying. What if Vega is rubbish? Are you still going to buy? Aside from people like Kaapstad who buy every card that's released, who else is making the decision to buy now without any information?
As for the Why question, I mean, there is no information. Some people have said they are buying Vega because of having a freesync monitor. Again, if Vega is crap will you still buy Vega, just because you have a Freesync monitor? I bet you don't.
So I don't understand the point of asking these questions. There is no info to base an answer on.