This is my second bullet. I bought the more powerful one this time. Had a problem with leaking. Put it on so tight I couldn't get it open threw away. Second one leaked also I think the vibration loosen it to make it leak. I like the convenient of drinking right out of cup.
I've had this product for less than 2 years, I have probably used it 10-20 times and it already doesn't work. I've only made smoothies with it too! Never buying this brand again!
I upgraded to the NutriBullet Pro 900 and have been pleased with the power and speed when blending drinks, and smoothies. It does not leave "grit" in the smoothie when protein powder is added.