I'm about to order my new 27" 5K iMac... I plan on possibly using a second 27" monitor with it, for more screen real estate when using Logic Pro X. Couple of questions: 1) Is the 395 processor sufficient to run the second monitor without any hiccups and slowdowns/heat issues, or would you recommend the 395X (mu budget allows for either, but I've heard the 395X might get too hot?)? 2) What is the best 27" external monitor that gets as close to the quality of the iMacs 5K screen? Thanks in advance.