I never considered Caddy, but always drove big American cars for their comfort, safety and value. Test drove Impalas, Lucernes, Lexus ES and finally this Caddy. Hands down the best family car for the money (especially used). Huge but still handles nicely. Cavernous trunk, very low noise and exceptional stability means great road trip material for the family. Northstar provides great highway performance and very good gas mileage (22-23mpg). Love the simple layout and easy-to-use creature comforts. A couple of issues with window regulators and electrical shorts (all fixed under warranty) marred the otherwise great reliability and consistency. GM better not discontinue this one!
Northstar V8, seats (heated and cooled), overall comfort and quietness
A bit more off-the-line oomph, better accessory quality.