I make smoothies every day. I burnt a Ninja up in 2 months and it never did make smmooth smoothies when it worked. Finally broke down and bought a Vitamix 7500. WOW!! There is no comparison. The Vitamix is so powerful. It destroys everything I put in it (including seeds like strawberry & chia) in under 30 seconds. It is unbelievable how impressed I am with this blender.