[eleven11]

Charge per month depends on how you are purchasing or leasing the vehicle. I lease my M5, so for every $1000 I add, I'm looking at around $12/month. For financing, it will be more. Also, there's a large variation depending on how good of a deal you've made. If option costs are that important, why the rush in placing your order?

Regarding the B & O stereo upgrade, most love it. I love it, but I listen to music often, and critically.

Regarding the ZCP upgrade: There are several posts that give pros and cons about the package. I have it, and am happy I got it. It's probably too expensive for what your get, and its elements probably should have been part of the core vehicle to start. I went with the 601M wheels, instead of the 343M wheels. The 601M look better in person versus pictures. It's a personal choice. The 343M are, ironically, lighter and likely stronger. Both look great.