I agreed with golfer.

One more consideration is the interest rate (or money factor) betwwn lease or buying (financing).

I had asked myself too many times whether I should lease or buy my 08 E70 3.0, and I had decided to lease it because 1) I don't know I will keep the car for more than 3 or 4 years and I don't have to pay the full $4.5K sales tax up front, 2) I don't have to worry about depreciation or any minor scratches, and, 3) the interest rate is not hugh different compare to financing. Mine was 3% (.00125 MF) for leasing vs 0.9% financing. I will decide whether to keep the car 3 years later, or get a CPO for a better price and with extended warranty.