As far as I know right now bitcoin price is little bit low and in near future price will rise again. So I think it is best time to buy Bitcoin.
The price is going down yet again we will have to see at which point we begin to notice a reaction by the bulls, but the most important thing is your mindset, do you think that you are going to be able to hold your coins even if the price keeps going down? If the answer is yes then you can buy bitcoin right now without any worries, but if the answer is no then it could be better for you to wait a little bit longer and wait for the price to finally become stable before you enter the market.
Bohor there were news and predictions about Bitcoin going to 5-6000$! But the price didn't go under 7000$, for days it's close to that
point, currently 73254$. From here price can go deeper, and I agree that will be a good buying opportunity, but what if that doesn't happen?
What if price goes over 8000$? Than you would miss a good buying opportunity.
If you wait the price to become stable I think what w have in the last couple days is the best we can see from stability.