Hi guys, About to fire off an order a for a 5k iMac and I would love some advice /opinions from people on here. This is a machine for my professional photography business, mainly using Photoshop, Lightroom and Capture One, but also running the usual iTunes/Spotify/Chrome stuff. I need this to be a workhorse machine for the next 5 years. Would upgrading the CPU and GPU make much of a difference for these uses, or is it more useful for programming/3d/video/gaming? I'm happy to upgrade if required but if these software packages can't take advantage then there doesn't seem to be much point. Running a 2nd conventional 24" monitor could be useful (as I currently do so), and would a GPU upgrade aid in this? Are people upgrading more with an eye on how things progress in the next couple of years than because of a real world difference right now? I'm going to max out the RAM and choose an SSD with external HDs as bulk storage. Cheers, Ed.