My pleasure Andrew - thanks for your feedback. I've only had the 58 for about a week, which probably makes it premature to post a review. However, it quickly became apparent that the knot was performing just like the Duke, which I've had for closer to 2 months, so on that basis I felt it was reasonable to write it. If anything changes I will follow up. If you like your Manchurian now, I expect it will likely only get better over the next couple of weeks as it opens up a bit more.
I was going to make a similar comment about the Duke and 58 in that photo. The tips on that 58 look noticeably whiter than the Duke. I'll bet this has to do with lighting and the way the knots are shaped.
Peter, the review is excellent and makes for some very informative reading about brushes in general. I am forming a very similar opinion of my Manchurian Duke. Thank you for taking the time to post that.