I prefer the tight technical terrain. The dealer offered $4,000us for my '12 280i which needs the top end replaced. The 300 conversion was an additional $1,300 for an actual trade in of $5,300 US. I am starting to think replacing the top end to a 300 for $1,300 is my best option vs. $4,000+ for the new 250i which makes me think the power is lacking?