I have a, Boreas, moonshot, theorem, and Billow V3 on the way. I'll compare them to the Bellus and Cthulu V2 for tanks and Mutation xs and Alliance V2+. . .if they rank together ima be a very happy camper. I have unopened griffin and Avacodo to try as well. I'll rank my preferences in here if that's ok.
I've never thought the 'mizer is a flavor tank, but I'm the odd man out there. But the folks in this thread giving these tanks the ratings they are makes me think the Boreas may just be the one.
I love the Alliance dripper...great flavor from a dripper with a hug capacity, no leaks, easy to build, and the coating on the drip tip, thermal isolation from the mod make it GREAT IMO. @LordVapor is the man for turning me on to it...it equals the Mutation for flavor, but blows it away for ease of use.