the current e9x m3's are fantastic cars, and my guess is that the f8x m3's will be as well. time and technology move on, and that keeps the lid on values for most of what becomes 'old' tech. i love my e92 m3, but some day down the road i would not at all care about selling it if the new one was a great car. i have no problems with turbos if they are well implemented, and from the sound of things bmw is really getting good at accentuating the pluses and minimizing the minuses from turbocharging.
2015 M235i, MW/Bl, all packages
2012 x3 m sport, carbon black, prem, tech, conv, etc
evil the following 29'er, specialized carbon stumpjumper s works fsr, trek madone 5.2
nikon d500, d810, d750, 14-24, 24-70, 80-400vr, 500vr