I wish I had the engine in my Limited Roadster (with a stick) but otherwise there isn't anything that really draws me to an SRT over my car.
But to get back on topic, no, I would never consider a Crossfire (of any flavor) a supercar. They just don't have the "wow" factor, nor do they have the aura of "supercarness". They are cool, quick, fun as hell and I wouldn't give mine up for anything less than a car costing more than 10x what I gave for it.