The LS 400 is Lexus' bread-and-butter luxury sedan, its flagship and traditional standard bearer. Comfortable, prestigious, laden with features, the LS is a boulevard cruiser designed for the best neighborhoods., , The LS gently coddles its passengers, riding like a cloud over the bumps and heaves, isolating driver and passengers from the rough edges of the outside world. The GS is firm, allowing some jostling of the human cargo but still keeping harshness at bay., , The LS is no slouch in the acceleration department, sprinting to 60 in about 6.6 seconds, Lexus says, the slightly greater weight and slightly less horsepower slowing things just a bit, compared with GS. Indeed, the Lexus literature touts the performance abilities of the LS, noting that it is a car of 'dual personalities,' luxurious and sporting.