Whilst my observation might seem pretty obvious (!) to those experienced with small knots, I thought I would share it. I recently visited Spain where I wanted to find a cheap horse-hair brush since I had never tried that before. I found a Vie-Long 12601 for around Euro 10 and have been experimenting with it. With a knot of 20mm, it is by far my smallest brush. But, it creates a really substantial lather not to mention an excellent on-face feel. Given that the rest of my brushes are 24mm to 28mm, this little Spaniard almost seemed better than some of the others I have. But, was that simply because it's smaller and I used more or less the same amount of cream I would use on a larger brush? I assume a larger brush requires more product? Perhaps I don't add enough for my larger brushes but this 'wee Spaniard' is a winner in my books!