What is The best Social Network ?

I believe for me the Social Network that I get Most engagement on is Twitter, I Use it for personal and Business, as a matter of fact I have 4 accounts 2 for specifically promoting mine and others business's, one that is Just my personal one, and  last my business account ( I mostly use of all) So My question to You is what is the  best social Network That Your connected to, whether its for business or personal.
Here is a great way to connect with people > SociaLink