My wife and I currently have Windows based laptops which are probably 4-5 years old and need to be replaced. We are thinking of purchasing and iMac with Retina 5k display for our anniversary present to ourselves.. It would be the base model that Apple shows for $1999. I figure that I can add RAM later if needed, and we both like the larger screen as we are getting older. One reason we are thinking of getting an iMac is we are both getting more involved with photography, nothing fancy but want to learn to do more editing of our pictures. My question would be is it hard transitioning to an Apple computer after using Windows based systems for so long? We both have iPads and my wife loves how intuitive the OS is compared to Windows.