Another option is a Whipped Dog Synthetic in a 22mm or 24mm knot (your choice): $22 out the door. It is an excellent knot.
I put one in a Bethlehem Olivewood handle and have used it as my travel brush and at home in my rotation, however the WD handles are very nice. I have a burgundy one on my WD Silvertip.
Whipped Dog Straight Razor Shaving Equipment
Synthetic
http://img.photobucket.com/albums/v6...ps14cadbae.jpg
Silvertip
http://img.photobucket.com/albums/v6...ps702b4220.jpg