hello there, Right now, I am using an old early 2008 peryn core2duo 2.5ghz macbook pro with 4GB of ram and 200GB 5400rpm hard drive connected with a Dell U2312HM and an external USB2 1TB hard drive. I am in need of a new computer and I would preferably stay within the OSX environment, but I just can't make my mind because of all troubles there are with Apple products right now. I would also like the computer to last me the next 3 years. The camera gear I have: Canon 60D + 17-55 f/2.8 and 50 f/1.8 My first thought was to buy a rmbp 15 inch model with the DGPU, but at $2600 it's pretty expensive and I'm not sure I need to spend that much money for my needs : photo editing, web surfing and watching movies. Then I was thinking of buying the 13 inch version with 256gb hard drive and 16gb of ram. Lots and lots and lots of forums say the User interface is laggy and that even resizing photoshop windows is laggy/choppy. I would use the 1440x900 resolution on the 13 inch, not the "best for retina" and it's been said to lag even more with that. So, now I am not sure what to do. I started thinking of the macbook air without the high screen lag problem but only 8gb of ram would be future proof. I thought of buying the mac mini quad core with fusion drive and add 16GB of memory, but it still has Intel hd4000 and at the back of my mind, I always thought I'd prefer a laptop just because I can use it wherever I want. Also, I plan on buying in the future a 27 inch display or a 4K display, so I think graphic wise it would be important to be enough in a couple years down the road. It stresses me and paralyzes me because I dont have a machine that works correctly enough to enjoy Post processing and then I'm afraid to buy a computer that I won't like in a couple months because it's slow or because in two years, its video performance will put me in the same place as today. Do I really need to start looking for a PC and windows 8.1? What would you guys do?