Brush makers show thread. Razor handles also welcome.

[GarnerPW]

Decisions, Decisions, Decisions.
My Oumo knots order from AliExpress arrived today. 
I think I did all the possible combinations for these knots and handles without putting the synthetic in the horn handle. Although it actually looks good in the horn I just can't bring myself to put a synthetic knot in the horn. It just seems wrong. The 3 knots are 24mm and are a boar, a horse and a synthetic. 
The last picture is of a 30mm Boar in the other horn and wood handle. None of them are glued in yet. I look forward to getting them glued up and trying them out once I can decide which belongs where. 

So what do you guys think. 

A. 
B. 
C. 
D. 

So I walk away from my computer but found myself thinking back to the scope brush. What did you put in it to give it weight? That's just the scope lens, a little bit of aluminium. The knot would weigh more than the handle.