Bought a Regal RL1 in July to replace a 2005 Saab 9-3. GM didn't do a good job Americanizing the Saab, but it has done an outstanding conversion of the Opel Insignia into the Buick Regal. Currently built in Germany, the Regal has outstanding design details, workmanship, and reliability. I have the dark blue exterior, cashmere interior which is really a gorgeous combination. Love the comfortable leather seats, dual climate controls, quiet ride and sporty handling. And even the little things like the power up/down on the passenger seat and the ability to customize the locking system, e.g. I choose to open all doors with one click of the remote instead of two.
Better visibility with more conventional outside mirrors. That's all! Some owners have complained about the lack of an interior trunk release, but this isn't a problem because if the car is unlocked, the trunk can easily be opened via the latch under the circular emblem on the trunk lid.