Good article in recent R & T about Z3's, both roadsters and coupes. Goes through all the iterations, things to look for buying used, current market values, etc.

I was a bit surprised revisiting the M Roadster performance stats. I thought the car was a bit quicker than they described it.

Even though they're very common, I've always liked the Z3 styling and still will watch one go by. The Z4 is an abomination styling-wise, IMHO.