I just received the HNF this morning, and I couldn't wait so I 'super' steeped it in a cup of hot water for an hour, shaking vigorously every fifteen minutes. In the mailbox it came an almost uncolored light liquid, by the end of the hour it was a pretty light lemony type color. Dripped some onto an atty, vaped and peed myself. After I cleaned up, I loaded up a new Smoktech Jumbo 1.7ohm single coil (Resurrector), threw it onto my Vector Variable Volt and went to town. Been tooting it all day. Inhale, sweet honey and a mild tobacco. Exhale, more honey and a light nuttiness. It literally lingers on the tongue and I find myself constantly licking my lips after a drag lol. It's wonderful. I never got to try the RY4, but I can certainly recommend the HNF.