Right now i've just really started to get into video editing and i've been working on my 2012 MacBook air with 4GB of RAM and such. When I work on it for a long time, it starts to get really hot and I have to take breaks so it doesn't get laggy. I've been looking for an iMac for a while now and i've saved up enough for one but I do not know what I should upgrade and what I shouldn't. I used FCPX to edit videos if that helps. The main dilemmas I am having are between: 2.9GHz Quad-core Intel Core i5, Turbo Boost up to 3.6GHz vs. 3.1GHz Quad-core Intel Core i7, Turbo Boost up to 3.9GHz [+$200] 8GB 1600MHz DDR3 SDRAM - 2X4GB vs. 16GB 1600MHz DDR3 SDRAM - 2X8GB [+$200] 1TB Serial ATA Drive @ 5400 rpm vs. 1TB Fusion Drive [+$200] I think I already know i'm upgrading the RAM because you can't do that later. I'm just stumped if its worth it to go up to the i7 and if it will be that much better. As for the Fusion drive, heard good things about it but don't really know if it's necessary. Any help would be grateful. I'd rather not do all three, two out of the three is more reasonable money wise. Thanks!