Got my First Edition MME yesterday. It's a gorgeous Grabber Blue! Fit and finish is perfect. Drives like a dream. The Co-Pilot 360 tech works amazing on the highway and hands-free rollout this fall should make it even better. Took a 500 mile highway trip at speeds of 75-80mph, and efficiency was between 2 and 3 mi/kWh, largely depending upon strong headwinds. Driving around town my mi/kWh is 3.8-4.0. Ford's EPA numbers are extremely conservative. The Sync infotainment system is remarkably intuitive and Apple CarPlay works wonderfully. I can use Pandora through CarPlay simultaneously with Ford's nav system and it all just works. My dealer experience was terrific, but I acknowledge that for some that can be quite negative.
Small negatives: found a few small software bugs, and the driver's screen emits a faint buzz (coil whine) as others have noted. It shouldn't buzz, and Ford should fix it, but it's pretty trivial because you can't hear it while driving or with any other ambient noise.
One big negative: Ford's "Plug and Charge" - which was designed to match Tesla's ease of Supercharging - flat out doesn't work right now. The good news is that the Electrify America chargers I used worked very well when I bypassed Plug & Charge. The charging was much faster than expected. At each stop, I averaged between 80 and 100 kW. Went from around 30% back up to 80% in about 25-30 minutes.
I am THRILLED with this purchase. It is such a good looking car, and so fun to drive.