I love my stainless steel container. I bought one for my daughter and son-in-law as well for their anniversary. Keeps things colder than the plastic one . It’s the “perfect ” size. It’s easy to clean by hand or in the dishwasher -which is fantastic. 
The absolute only con is taking the lid off which is always an effort and a struggle.
I love my stainless steel container I am so happy makes mornings smoothies exciting again☺️
Still gets a 5 star rating.  I would like to see a lid that is easier to take  off.