BMWs today are largely living on reputation of being a "driver's machine" kind of thing. They softened them up a lot in the last redesign to appeal to more people. They lost the edge. The redesigned 530i appears to have gone back to their roots.
HOWEVER, it is a rare driver who can both tell a difference and make that difference amount to anything on the street. Most Bimmer owners drive them the same way Accord owners drive Accords.
When I rode my bicycle a lot, I would pass other students going up hills easily because they were plodding along in the wrong dang gear. I yell "down shift!" as I went by and they appeared to have no idea the bike had "gears" for some reason. They had expensive bikes and no clue how to use them.
Cars are the same way. A Honda Accord is a very nice car, plenty fast with the turbo, and handles well for a FWD car. Don't pay $15 K extra for a Bimmer unless you know how to drive it and appreciate that aspect of it. It likely doesn't accelerate any faster if you bought the 330i versus the Accord 2.0 T. Both have the same size engines and the FWD drive train is more efficient.
I like to go out into the country on occasions or up in the mountains and push the car a bit, but not that much. A deer could be around the next curve. I'll save my fast driving for the track, which I have done twice in my life.
Why get a 460 hp Corvette when you can only really use 200 hp? Heaven forbid you shell out for the ZR1 Corvette.
Some cars today are crazy.