The Haar RTA is a collaboration by Mark Todd in the UK and Van and Del in Croatia! I have high hopes for it because Mark and I have a very similar Vape Style. Siam Tips fit like a dream! Major win! Easy to take apart and assemble! Popping in a coil is a piece of cake! Really easy! Wicking is also simple and really hard to cock it up. 22mm so it will fit your older high-end mods as well. Will vape it for a day or so and come back with my feelings... but I can already say it's going to be a Chicken Dinner!