Okay here goes I own a 2014 base mac mini 4gb ram intel 5000 graphics I could sell it on ebay for about 300 I see some mid grade 2014 mac minis 8gb ram and iris graphics on ebay for 450 even for 415 I have a 10% coupon so 415 - 40 = 375 which means I may end up spending 100 out of pocket to do this upgrade. In order to get my base 2014 to work with any speed I boot it with a 2tb external mircon ssd. So my thoughts are this the midrange 2014 with iris 5100 with 8gb ram seems like a good upgrade. I simply don't need the 2018 mini. So who runs a midgrade 2014 mac mini with an external boot drive/ssd. What do they think about it. Even better has anyone run both the base model and the midrange 2014 minis with external booters and how much better is the midrange model? TIA for your info on this.