Professional Photographer Magazine (ppmag.com) has an in-depth review and comparison of popular white balance filters. PPMag authors note that if the available number of white balance products is any indication of photographers’ interest in creating a neutral color balance then the interest level must be pretty high.
White balance is not as much an issue when shooting RAW (because of post production flexibility with RAW), however, when photographing with JPEG white balance becomes MUCH more critical.
