In the Anti-Static Category, the current brushes available are:

BrushOFF™ $58 by Photographic Solutions – This is the only manufacturer that offers a guarantee to not damage your sensor. 

StaticWISK $29.95 by Kinetronics Corporation - constructed with anti-static fibers and a special conductive handle to dissipate static electric charges
DigiBrush $24.95 by American Recorder - constructed with carbon fiber brissles.