Will be purchasing 2010 M3 convertible in Feb. for performance center delivery this Spring in SC. Will trade in my 03 M3. I was hoping to get the best price possible. I live in Northeast near Phila. and have several nearby dealers. What should I expect to pay under MSRP (or above invoice)? Any opinions on strategies to hagle with dealers? My old M3 is loaded with only about 33K. Should I expect Bluebook value for trade-in? Any advice would be appreciated. Thanks for your help. Greg.