Controls and texture

Manual speed or automatic programs?

“Manual” and “automatic” are not mutually exclusive. Vitamix E520 combines a variable-speed dial and Pulse with three named program categories. Blendtec's Total Blender Classic combines ten speed steps and Pulse with six recipe cycles. The Classic 575 instead uses five fixed speed steps and Pulse alongside a Smoothie cycle, Clean cycle and two timed runs. Designer 650 and 650 S list six food-cycle labels plus eight manual speeds; the Gunmetal variant lists eight speeds, a Clean cycle and a +10-second control. The Professional 800 offers six named cycles, 11 manual speed settings and Pulse, but adds an enclosure that changes the countertop setup. Decide whether you prefer to adjust as you blend, select a maker-defined routine, or have both.

Manual speed puts adjustment in your hands

E310 and E320 use ten variable-speed settings and Pulse. The current Blendtec Classic 575 adds five incremental steps, each with a fixed 50-second run; its Pulse runs while held. Total Blender Classic uses ten manual speed steps with Pulse. Designer 650 variants list eight manual speeds and Pulse, while both new and refurbished Professional 800 listings describe an 11-speed touch slider plus Pulse. These controls give you a way to change course as a recipe progresses, but they do not choose the right speed or ingredient load for you. Follow the recipe and the exact operating directions instead of expecting a particular texture from a button count.

Manual control does not guarantee a particular result. Ingredients, quantity, liquid, blade movement and appropriate technique still matter. Dense mixtures may need a matching tamper through the secured Vitamix lid as described in its instructions; never reach into the jar or improvise with a utensil while the blender is operating. Blendtec's covered jar system has no comparable tamper in these reviewed packages; do not assume the same technique or attachment fits.

Programs supply a preset routine, not ingredient sensing

Vitamix E520's exact package lists Smoothies, Hot Soup and Frozen Desserts categories, while its manual describes corresponding cycles. Total Blender Classic lists Smoothie, Batters, Hot Soup, Whole Juice, Ice Cream and Ice Crush. The standard Designer 650 and 650 S pages name Sauces & Batters, Ice Crush & Margarita, Smoothie, Ice Cream, Whole Juice, and Hot Soup & Fondues. The Gunmetal page names Smoothie, Ice Cream, Whole Juice, Hot Soup and Clean; its own spec line counts five while nearby copy says six, so do not assume an unlabeled sixth recipe. None of these page details establish ingredient sensing. The programs set a maker-defined cycle; recipe amount, starting temperature, load order and safety instructions remain important.

Classic 575 is different: it offers Smoothie and Clean buttons plus 60- and 90-second one-touch cycles. Those timed runs are useful when a recipe calls for more running time, but they are not separate recipe-category programs. The five manual steps and Pulse supply a separate mode of adjustment. The product page mentions soups in connection with the longer cycle; its manual warns against blending hot liquids, so do not treat a run-time label as permission to add hot ingredients.

Choose the control path that matches what you do

Choose E320 if a 64-ounce nominal jar and manual dial suit your routine without category programs; choose E310 if the smaller 48-ounce jar is enough. E520 adds three programs and two separate Chilly Tumblers to its 64-ounce jar. Choose Classic 575 if you like a simple Smoothie/Clean/timed-cycle menu plus five speed steps. Choose Total Blender Classic if you want six named recipe cycles and ten speed steps. Designer 650 is the six-food-cycle choice with eight speed settings; Designer 650 S keeps that menu in a documented stainless-steel base; the Gunmetal listing has a Clean button and +10-second control, with a page-count discrepancy. The Professional 800 adds the enclosure, six categories and 11 speeds, with clearance needs a major part of the decision. The refurbished P800 keeps the described menu but has a one-year term and may have minor cosmetic marks. The jars and marked finished-product volumes also differ by package.

Motor horsepower and wattage are manufacturer ratings, not independent tests of speed, sound, texture or recipe success. Read the Blendtec Classic cycle-and-jar comparison, Designer 650 package comparison and Professional 800 enclosure guide, then visit the exact reviews for Designer 650, 650 S, 650 Gunmetal, Professional 800 and Professional 800 Certified Refurbished. The finder distinguishes manual-only use, core program categories, enclosure, jar, finished-fill and warranty needs.