I am interested in buying a Testarossa. I would appreciate any comments, especially from owners, about their experience with the car. Is maintanence as expensive as I'm told ($10K+ for 30K service, 7-8K for 15K service, and $1K for routine services); is the car "enjoyable" to drive, or is it "too heavy" feeling? Are the later version cars (512TR) improved significantly enough to justify the $30K plus price premium? Any thought are appreciated. Thank you in advance.