We shopped around before buying the 2006 Grand Prix. It has met or exceeded all our expectations so far. I bumped my head the 1st time I got in the back seat. We were surprised how roomy and confortable the back seat was after reading mixed reviews and remembering to duck. This our 4th car with the 3.8 litre v6. We would have to say it's one of the best engines ever built. We bought the base model and are very happy with the acceleration. Wow what a great car!