The whir of the motor is powerful as you are making your smoothie, and you are confident in your decision to purchase a used Vitamix blender. Vitamix is one of the most recognizable brands in high-performance blenders since the early 1990s, and is a great option when looking for long-lasting quality. There are many models to choose from falling into one of three categories: C-Series, G-Series, or S-Series. The C-Series is the traditional line of Vitamix blenders, with most models falling into this category. These blenders feature a 2.0 horsepower motor, variable speeds, and pre-programmed settings. The G-Series is the next generation of models. This line includes the Vitamix 750 Pro Series, which is a higher-powered professional grade blender with a 2.2 horsepower motor. The S-Series introduced the S30, which is a smaller version of other models offering single serving blender capabilities. Vitamix container sizes vary throughout all of the models, and can also be purchased separately if you wish to have separate containers to mix wet and dry ingredients. A large variety of new and used Vitamix blenders are available from sellers on eBay to meet personal and professional culinary needs.