I just picked up a 3.2GHz Core i5 late 2015 iMac with 1TB fusion drive open boxed at my local Best Buy (for $1750, a nice $250 discount) which I can tell was not even used; must have been an immediate buyer's remorse for someone. And I am already head over heels for this thing. The fusion drive is working as expected; everything opens super quick and I have no issues with performance. The screen is outrageously beautiful. And my goodness, the speakers impressed me! Hope you guys are loving yours as well. And if I had any suggestions it would be to make sure you at least get a fusion drive, because I had purchased a base model 4K iMac with 5400 rpm drive and it was actual torture trying to do anything on it. Any tips on how to get the most out of this machine? I would love some suggestions and reviews from you guys!