Aren't you guys wishing for a usable (less lag) scaled resolutions with your retina MacBooks without performance hits? Since these retina units came out '12-'14, i myself haven't been able to experience the full usability of having to use a scaled resolution without having to deal with one main problem, UI Sluggishness. Resorting to use third party apps or hacks like Switchresx just to have an extended real estate with reasonable performance. Best for display option is IMO a small workspace. even with a 15inch. Main use of work with my rMBP: Graphic Design, Video Production, Photography Why not get an external display?: We're always mobile and on-location. Cant wait to dish out my first gen rMBP (early 2013), just to get a reasonable mobile workstation that is also Apple.