Wow. That particular 550 must have been a real POS. If you buy an F-car, you won't have to worry too much about depreciation but the services will hammer your wallet. Conversely, if you buy a Porsche, your car will depreciate badly but they are very reliable. Maybe it'll be a wash, one way or the other depending on the model you buy. Frankly, I'd rather pay for the depreciation on a new Porsche than shelling out chunks of money as a pre-owned Ferrari falls apart.