I've been digging my Aquarian set up lately with modern vintage heads for a jazzier, warmer tone. I wanted something with a bit more of a thud than overtones for my kick so tried this out. For context I'm using it on my Sonor SQ1 22" kick - so birch shells.
In a word this drum head was perfect. A fantastic thump that I can feel in my chest, reducing overtones for nice clarity and nothing too muddy for double kick work (single pedal, unsure on double pedal).
I did go and put a blanket inside my kick for even less sustain but mostly not needed. The birch shells do like to sing a little.
Overall, I'd play these Aquarian heads for the rest of my life. Extremely happy with the quality and sound.
Thomann did a great job sending this out to the UK quickly and efficiently, and most importantly safe from scuffs and damage. Cheers!