I recently was accompanying my mother at the dealership in search of a new car once her current lease expires later this year. She currently has an SUV and I think the novelty of having a truck has worn off. The two vehicals that she was most interested in where the DTS with the Performance Package or the Buick Lucerne CXS. I get the impression she is leaning more towards the Lucerne based on the styling. I don't think she likes the DTS rear end. As far as performance, handling, and most importantly for her, ride comfort how do these two cars compare?