Why is the Lexus ES being brought up so much? If I wanted a FWD comfy cruiser I'd just go to Toyota and get their Avalon instead.
I think one of the main reasons someone would choose the Stinger GT-Line over the FWD options (Toyota Avalon, Nissan Maxima, Lexus ES, loaded Honda Accord, loaded Mazda 6 turbo) is because the Stinger offers AWD, a hatch back (more cargo space), longer warranty, and same great looks as the uprated engine Stinger.