Purchased a new 2017 black ST3 left-over with every option available 8 days ago. I really wanted the full leather Recaro seats, but paid little over the cost of a 2018 ST1 because the dealership had the car inside their showroom for 300 days and needed to move the car. Otherwise I would have purchased an ST1 due to the excessive cost.
2016 MM ST3. I would have bought an ST2 if I found the right one, but steered clear of the ST1 without the touch screen. Probably doesnt make much of a difference, but I like the look of the console with the screen much better.