Yeah, it's good. I like it in the a.m., so does my bitc....I mean girlfriend (hehe). I got two - 3ml bottles and put 'em together in a bigger bottle. I had a little of the Caramel left over. That Caramel e-liquid is STRONG by itself but the RY4 makes it GOOD. I hope I like that Espresso; it'll probably get here tomorrow. What kinda hardware do you use? I have a KR808D-1.