So far all is well. I noticed right away it’s much faster than my 11 year old Mac. It couldn’t be updated anymore so it took minutes to respond to commands. This renuwed IMac is instant! I think like apple products work it’s intuitive for me. I have not tried support yet so I’m not sure how that is. Right now I would do it again and I read that if you don’t love it after 90 days they will send you another one to try out!  I don’t know if that is your last shot or not.