Just got my iMac tonight....got it all set up and this thing is just incredible. I am coming from a 24" display and Mac Mini...in comparison this thing is huge screen wise...and I love the thinness..... As for the speed, I got the 3TB Fusion drive and this thing keeps up with my macbook air. I am very impressed, it is a huge upgrade from my 2.4 i5 dual core mac mini, even with 16gb ram. The only thing left to upgrade on this thing is is memory from 16 to 32, which will happen tomorrow when the crucial ram arrives. Just wanted to really let you guys know that the fusion drive is for real. I paced for days debating spending the money on the SSD vs just getting the Fusion...but storage space won over speed, but now im getting the best of both worlds. No regrets going this route.