If your main goal is long term reliability and low maintenance and repair costs I would recommend another brand. You have to want to own a BMW bad enough for other reasons and deal with the negatives.
I don't doubt that from the original post, the woman that went from the Z3 to the Miata found that the Miata was more reliable and cheaper to maintain/repair.
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2006 Z4M Coupe - Stromung exhaust, ZHP knob, stubby antenna, clutch delay delete
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