[deems]

As the previous poster said, it depends on what you want.

Are you willing to pay more for the extra power a 330i provides?
Are you willing to put up with a rougher ride to get the sports seats and sharper handling?

I would not recommend buying a non-ZSP car and then upgrading it to ZSP. If you want ZSP, but a car that has it.

I love ZSP and I can't imagine the car without it. But I'm going to swap the RFT's for Michelin PS2's.