Pretty confident that the E86 shell is a classic and should be viewed as a modern equivalent of what the Etype jags and such looked like back in the days. I genuinely prefer it to 911 shape (from the rear they are kind of reminding me of each other but i still like the Z). Hard to really explain why, I think it\s the clownshoe shape and chopped off rear look that is just very classic sports car.
looks is why I got it not build quality or the ride, to be honest.
I heard that Z4MC is already going up in value (Jalopnik had a review on it / hope that the non M will also go same route at one point) and unmolested clean cars will be sought after by bmw collectors later.