Traded in an 04 Mini Cooper S for the Z. Had a nice list of mods planned out but decided against it... car had about 75k miles on it not to mention I got very lucky. I only had to replace the driver's side window motor once myself (NO SHOP TOUCHING MY BABY!!) and the power steering pump never went out on me. Both are common issues with the MCS's. Luckily I didn't turn out like the guy who replaced the window motors 9 times, LITERALLY NINE TIMES. Oh and the power steering pump ALONE (NOT LABOR) is $600. Ridiculous BMW, absolutely ridiculous!!
That is probably the greatest deal I've ever gotten and will get on a Z.