I bought the E310 because I have limited space and I wanted real power.  It fits just below my upper kitchen cabinets and my garden produce has really put it to the test.  My family's favorite is mashed cauliflower...it's so similar to mashed potatoes!  I am gluten free and love it for my veggie-fruit breakfast drink.  Now I am looking to see what kitchen appliances I can get rid of because the Vitamix is so versatile!