I have a commercial Blendtec unit and one day, after adding yogurt to my morning smoothie, I apparently left the spoon inside.  Oops.  Shaved off some stainless steel and put a hole in the pitcher, and made quite a racket!  I ordered a new WildSide pitcher and am amazed at how much more efficient it is than my old pitcher - blending is faster AND neater - much less splatter to the lid.  I really do love my Blendtec.