Several years ago my husband (then boyfriend) and I went to Costco...saw the demo and came home with a Vitamix. We were not into healthy eating like we are today...we made homemade peanut butter (amazing) and some soups. Then we started having buyers remorse since we had a $400 "blender" and didn't know what to do with it. We returned it to Costco about a week later.
Fast forward to today...we've been ttc #2 for a while...in the process of it all we've changed our eating habits and gotten healthier. After reading Clean (great book plus great recipes), we wanted to start drinking smoothies (green and other colors :) so did some research and decided to go with the Blendtec blender this time. We LOVE it! The cost is high but we use it every day so its worth it. When we bought the Vitamix we didn't know what to do with it so it wasn't worth having such an expensive machine. Now it is.
Also the blenders come with a recipe book...you can make smoothies, juice, ice cream, etc. Its healthy and yummy! We made spinach ice cream for our 3 yr old and she loved it.
My husband does more of the making than I do but honestly I think you have to try several recipes and then see which you like best. He puts in whatever fruit we have in the house and adds spinach or kale...sometimes it works and sometimes it doesn't. We eat it (or try to) and then move on.
Hope this helps!