Congrats on the first year of ownership. I had to cringe a little when I saw your breakdown on the costs associated with ownership. I have had my 2000 base Boxster for almost two years now and over that time put on close to 30K miles on the car. At one point I made the mistake of tallying up the money I had spent maintaining, replacing parts, and modding the car. It ended up being more than the 21K I paid for for the car! I dont keep track of the cost of ownership any more, I just enjoy the experience....
Ed