I think the e92 is a great engine, makes a great sound and in DCT form is a good all rounder. The F8x cars are much faster, and by no small margin thanks to the torque, the F8x feel lighter too. I think that the e92 is quite far from the e46 and the e92 is closer to the f10 m5 IMHO. ALl great cars but it depends on what sort of performance driver you are, if you like using all your revs the e92 and e46 are only man, if you like muscle cars the s55 cars are your poison. Talk to Seamus the chap with the M5 on whats app Peter he has a e93 for 2 years and went through all the ups and downs of ownership. I got to drive it a lot, and thought it was a very fine car indeed.