Getting in the lambo is like climbing into a fighter jet. And it is so smooth and poised. The z is like a mellow regular car until you want it to be crazy and then it is freaking nuts. Honestly the z may be quicker in acceleration, but the lambo just sticks to the ground like nothing I have ever driven. Both have their quirks and are bad daily drivers. I just like both!
As far as how long I can keep a car like that? How about as long as I want. I just keep my z going and I'm sure I'll do the same for the lambo. There is a guy with a 2004 murci with 125k miles on the original engine. Thats not bad at all.