One of my past JetPens.com orders included a Kuretake Bimoji Felt Tip Brush Pen with a super fine tip, and I've finally gotten around to using it a bit more. It certainly looks like a traditional brush pen with a faux wood body and a felt tip that mimics animal hair. If you need something for fine writing, this would be a great choice. I bought it because I was intrigued by the pen and liked the idea of writing with it--the semi-soft rubber grip eases any tension in the fingers and the line width can be changed from fine to medium by increasing or decreasing the angle of the pen.
The pen writes smoothly on this Rhodia dotPad paper, and no bleed through or shadow so double-sided writing is fine. One complaint is that the plastic cap doesn't fit on the end of the barrel, and may be lost. Otherwise, it's a nice felt tip pen that writes well. You may not need something quite so stylized, but it's something to consider when putting together a JetPens order.