I love my ninja. It makes really good hot and cold drinks, coffee or tea.  The frothier works great. 
I don’t like the way there is a dark film in every cup, however. You can solve this by using a paper filter, in your permanent filter. 
I do wish ninja would come up with a system that grinds the beans and automatically brews from  the fresh ground beans. I would be the first to buy that system.