I have had a month so far of playing with my ninja. I love it, I mean really love it. It cooks thawed meat very quickly but it even cooks frozen meat so quickly that I really have to pay attention to it. 1 or 2 minutes can make a big difference. 
It also cooks veggies in the same timing as the meat. I just can’t say well enough how much I enjoy my Ninja. And clean up really isn’t bad.