As of 2015, some good beard trimmers are the Philips Norelco Multigroom All-in-One Facial Styling Kit and the Philips Norelco Vacuum Stubble and Beard Trimmer QT4070. Ask Men, which recommends these, also likes the Philips Norelco GoStyler Precision Beard Styler and Philips Beard Trimmer 9000 with Laser Guide.
What constitutes a good beard trimmer is often a matter of personal preference based on desired features and price. Many good beard trimmers range in price from about $20 to upwards of $90. Most good beard trimmers provide settings to adjust the length of the cut, providing for a custom trim to suit personal preference. Other good models may incorporate a shaver for additional shaving and trimming flexibility.