My dad roasted and warped 2 sets of 262mm rotors in a couple of years on his 190e before I gave him the 284mm brakes that came with my 300d. The 300d now has the 295mm 4 pots I had on my old 190e. Also theres far less pedal travel and less squishiness with the 4 piston calipers. Something to consider if you track your car.
If Mercedes thought 262mm brakes were so great they wouldn't have put 284mm brakes on the 190e 2.3-16.
https://i.imgur.com/8wp2PVs.jpg