A clue to the low quality of these blenders is the very generous warranty they offer. Obviously they know they messed up with a poor quality product. The splined connection on the bottom of the wildside jar is made of aluminum. The splines strip and the motor keeps spinning while the blades stay still inside the jar during blending, stripping them further and making it useless. I hope somebody got fired over that design. Being that Im not a sloth, obviously the jar was cleaned after every use and so the blades were never seized with any dried up food matter. After about 20 uses I am not happy. Nuts to any warranty, looks like I will be going for that ninja afterall.