Hello, a friend bought an iMac 5k 27, late 2014, (i7, 8gb, 512gb SSD). He's not really using it since the computer is located downstairs and would prefer a laptop. I have a rMBP late 2013 (maxed out model, dual gpu, 512gb ssd, 16gb ram). I use it from time to time but not that much. He suggested we switch computers. It's seemed like a cool idea but I'm not totally convince. I'm here for a second opinion. In my office I have 2x PC with i7 4790k, both 32gb RAM, one have a GTX680 the other a new GTX1080, the later, is hooked to a LG 4k monitor. The iMac would be in my case, a third 4790k. I would probably feel the need to upgrade the RAM. I used to manage my pictures on the mac but have more storage on my PC, and since i use Lightroom, I was able to move my collection quickly. I use the laptop sometime on the couch but I don't find it very confortable to use without a desk. I also wanted to use it while I commute but it's not confortable and too heavy for travelling everyday with it. Facts: - I also have an iPad and Galaxy Note4 (which I'm looking to replace). - I had an iMac before, I liked it but I sold it before it was getting old (2008). - I don't really need a laptop when I'm at home and watch multimedia on my phone/ipad/pc? - I will have to replace the battery in a few years, while they are still supported by apple. - I need a Mac to develop my softwares (hobby job).