And no one'e mentioned the RY4 from Backwoods Brew? I haven't had the chance to try any others as of yet (still pretty new to vaping) but I picked up a 10ml bottle of RY4 from BWB and it has become one of two of my all day vapes. Very tasty stuff. For a little extra zing, I add a drop or two of vanilla into the cart sometimes.
Unfortunately, the Backwoods Brew site is closed at the moment. I've heard a bunch of good things about them. Will definitely check it out when the site reopens (apparently later today or tomorrow.)