A few of the guys in my company had Mazda 6's (The shape just phased out) we are all on VW's now though thanks to a group deal.
Never heard a bad word about them, they drove really well had plenty of power, faultlessly reliable and very capacious. The only moan was from one guy who had some issues hooking up the bluetooth with his iPhone, that was it for about 4 people with a total of 12 collective years living with the things.