Stunning cars.
I've had mine for 1.5 years and still love it every time I get in it.
Running costs? Only things that have went wrong is A/C condensor- fitted new one myself, cost around £100. The A/C controller worked intermittently, repaired by me for the cost of a 23pence capacitor for the pcb.
Other than thta, spot on car.
Vanos issue: Some cars do have noisey units but they very rarely actually fail. It doesn't matter if it has had one changed or not, some last the life of the car, some last just 30k miles, just one of those things to put to the back of your mind and enjoy the car. I change the Vanos filter every time I change the oil 3k miles.
Don't bother with an E46 Ci, slower by about 80 bhp and bigger heavier and I'm sure they have "only for nancies" traction control, E36 M3 comes in "Man Control" flavour.
Thinking of selling......
Techno Violet, with new tyres and some upgrades...