I have ordered this brush from Yaqi,I have ordered the 28mm synthetic version of this brush. Really looking forward to trying it. Yaqi getting a lot of love right now.
24mm is the biggest I currently have. I had a 26mm Razorock Big Bruce, briefly but changed it for the 24mm Bruce. The 26mm one felt like I was wiping a mop across my face. Anything bigger seems like total overkill to me.30mm brushes "eat" soap like a fat broad at an all U can Eat buffet. 24-25mm is the sweet spot IMO.