I've been working on the courage to try this ("Now is the time to buy!") logic on my wife....
Basically, my idea is that I should sell my my 540 and other vehicles and buy 2 to 4 moderate coupes or a nice CSL example for about the same money.  My 540 is only dropping in value each month but a collection of E9s would, at worst, maintain value and likely increase.  :roll: 
This seems reasonable to me but somehow I don't think she'll subscribe to my logic.  :cry:  ... she keeps saying something about the cost of ownership or I can't remember ...