No one ever mentions the Herakles V2 RTA.
VERY similar to the Griffin 25. I have both and to me the Herakles has slightly better flavor and is a lot easier to wick. Plus you can fit more wicking into the two larger juice channel than you can on the Griffin's four small channels.
Just make sure you get the V2 version with the two large airholes and 2 large juice channels, not the original one with 4 air holes.