Thank you all for your comments and suggestions on my other posts. I really appreciate you taking the time to respond and you have helped me lean towards my first iMac purchase. One other question I have, which I forgot to discuss is the monitor. Giving the 27" 5K only allows for brightness adjustment, it appears there is not much wiggle room to calibrate. How accurate are the colors when doing color correction (LR and PS) for photo work? I cannot afford to purchase iMac and a Monitor that will allow me to calibrate properly at the same time. Any suggestions? Again - Thanks for all the feedback.