The Caddy CTS is regarded as one of the best Caddy's made. The 3.6L V6 is great. One of the best V6 engines GM has ever made. The new ones make 304hp. Impressive for a V6 I say. Even used they are still good. The newest CTS' have been the topic of frequent reviews by many auto magazines as the best. For 2010, there will be a CTS sport wagon. As far as everything else, the Northstar equipped ones are good too. Very reliable but a bit costly. Don't even think about the Escalade. Those are rebadged Yukon's & Suburbans. They stopped making those due to poor sales. And when that happened, their resale took a dump. I hope I helped a little. G'day!