Originally Posted by ///1M
So if you had a 1M and an M135i side-by-side in the garage, which set of keys do you reach for?
Definitely the 1M. It's a more special car that feels a lot sportier and hard-edged than the M135i, even if it's not much faster (if at all).
I am willing to take the tradeoff in comfort and usability that such a choice entails. But if anyone prefers a bit more comfort, the M135i is a fine choice, more so considering the price.