Currently have the following setup: 2011 21.5 iMac (with ssd) with 21.5 Second Monitor attached, and a 2015 Macbook Pro 13. Usage: Web Browsing, Word Processing, Web Design, Photo Edit (not heavy), Virtual Machine (for Windows applications), and some misc DTP. Looking to change out iMac with something else. 1. Does anyone have a 4k iMac 21.5 with external 4k 21.5 screen? If so how is it? 2. I like the dual monitor layout (minus it doesn't match the iMac). Trying to decide if I should go dual layout again, or go for something else. Used 27" in store and looks great, I just can't tell from limited usage how it is with multiple documents, side by side windows, etc. compared to my dual monitor setup. I have given up on the Mac Mini for now. My third option would be get an older MacBook Pro 15 with discrete graphics, like a 2014 or 2015 and just keep it on the desk as a workstation with either one 21:9 monitor or 2 dual screen displays (and thunderbolt external SSD probably). Just wanted to get feedback from people and if they have any similar setups to the above. Ultimately I think it will come between the two iMacs but not set in stone.