I owned a convertible Beetle before the G6 and I am so glad I made the trade! I bought a silver 2005 GT sedan with 16k miles. Although I miss the convertible, I love my G6. I consistently get 25 mpg city and 34+ highway; I got around 18 city in a 4 cyl Beetle. Very spacious and comfy. Handles great and it's very fun to drive. Doesn't feel like a sedan at all. The Beetle felt like a $25k go- kart compared to the G6.
Spacious interior, sporty exterior, leather, power seat, information display on the radio, gas mileage, remote start
The one thing the Beetle had that I miss: mirror defrosters. Also, when I'm pumping gas, I have to constantly adjust the nozzle because of the angle of the gas tank. Minor annoyances.