We offer the broadest selection of shoulder rests because the needs of violinists and violists are so unique. We suggest you order a few shoulder rests, and return the ones that do no suit you. When trying a new rest, keep in mind that you may not be initially comfortable with a rest simply because it is different than what you have been using. Allow adequate time for experimentation, and for your body to adjust before deciding against a product. Consider trying various chinrests in conjunction with your shoulder rest choices.