...cost, options and mileage.? The 2006 LaCrosse is a CXL with 33,000 miles, leather, On-Star, back-up sensors, GM certified, 3800 engine, remote start at $15,365. The 2007 Impala is an LT with 32,000 miles, leather, XM radio, 3.9 L engine, new tires, remote start, spoiler at $15,175. The Buick is with a Buick dealer and the Chevrolet is with a Cadillac dealer. I can get 4.9% GM financing on the Buick and 4.95% financing through my credit union on the Impala. I know that 2.9% GM financing is available on the Impala; but all the Chevrolet dealers I have checked with do not have the colors/options/price that I want. Any ideas which is the better car/deal?