The terms "polisher" and "buffer" are often used interchangeably in the context of car detailing, but they can refer to different tools or processes based on their function and the desired outcome.

Here’s a comparison to help you understand which might be better for your needs:

Buffer

• Primary Function: A buffer is generally used for the application and removal of wax, or for very light polishing. It’s less about correcting imperfections and more about finishing and protecting the paint.
• Type of Motion: Buffers typically have a straight, non-orbital motion, though the term can also apply to machines that use an orbital motion.
• Aggressiveness: Generally, buffers are less aggressive than polishers. They are used for tasks that require gentleness, such as applying wax or a finish, without removing substantial layers of paint.

Polisher

• Primary Function: Polishers are used to correct paint by removing a fine layer of the surface to eliminate scratches, swirls, and oxidation. They are essential tools for achieving a smooth, high-gloss finish.
• Type of Motion: Polishers can have different types of motions, with the most common being rotary (spinning in a circle) and dual-action (spinning in a circle while also moving in an orbit). Dual-action polishers are generally safer for beginners as they reduce the risk of damaging the paint.
• Aggressiveness: Polishers can be more aggressive, designed for cutting through paint layers to level out imperfections. However, their aggressiveness can be adjusted by choosing different pads and compounds.

Which is Better?

• For Maintenance: If you're primarily interested in regular maintenance and protection of your vehicle's paint without removing imperfections, a buffer (especially an orbital buffer) is suitable.
• For Restoration: If your goal is to restore or improve the paint by removing imperfections, a polisher is the better choice. It’s more versatile and can also perform the tasks of a buffer by simply changing the pad and setting.

In essence, the better choice depends on what you aim to achieve with the tool. If you need both polishing and light finishing capabilities, many modern dual-action polishers offer settings and accessories that allow them to perform both functions effectively.