The main body and the blade seem to be of good quality. And so far I have not had any problems while using it. The only comment that I would give to Blendtec would be the lid. There have been other comments that the lid seems thin and weaker than it should be for the price. I attached a photo of the lid for this model compared to the Blendtec 16 oz lid (part #40-242), and that lid has twice the thickness compared to this lid, in addition to being more ridged. But while it is thinner and not as ridged, I have noticed that while it is being used, especially during the smoothie setting, there is a draft that pulls the lid down and makes it tight and ridged. So I do not know if that was a planned feature by Blendtec to make it easier to take on and off with this size container while the unit is not running, but then became ridged with the created draft when it is being used.Overall, while there are comments about the lid being thinner, it still works fine. It might be to Blendtec's interests to explain the lid a little more or make a thicker lid, something that the general public would feel like they should get with a blender container that is over $100.