Hi guys, I'm looking for some guidance. I'm ready to get an iMac from the refurb store. For someone like myself who wants a fast machine to edit videos and play the occasional games on Steam, should I go with the non-Retina iMac which I'm assuming sacrifices the high resolution panel for faster performance. Is this correct? I'm looking to spend between $2,500-$,3000. I want to pick the Retina iMac purely for future proof because of the newer ports, screen, etc. but perhaps it's better to buy the old iMac? I also have a Dell PQ281whatever that's 4k which I will use as a secondary monitor. Still not sure which is a better value. Any thoughts?