After sitting in a 300C SRT-8 and a Lucerne (I forget which model) at an auto show...I don't see what is so great about the interior. You wanna complain ergonomics? How about the lack of telescoping and limited tilt of the Lucerne's steering wheel. The 300 has that, which I find to be a very important feature to find the optimal driving position. The materials in either car aren't as good as they could be. I believe the LH cars had nicer materials than either of these. That being said neither is horrible.
As for dynamics, it's more than just the H3M1 P0WAH!1! In many of the comparisons the 300 has been in, it has always been praised for being the most willing to play of the test vehicles. Communicative steering, confident handling, good brakes, etc. It's also RWD, which besides being the choice for best dynamics, also grants it something unique that other cars in the class don't have. It can also be outfitted with AWD...something the Lucerne can't.
On top of that, it has something for everyone. From budget buyer (I'll admit, the base V6 is junk), to mid level, to the hemi, to the SRT-8...and enthuisast's dream.
I like both cars, my point is that the 300 most certainly deserves to be on that list (although the Charger even more so IMO).
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Also the Fit is more versitile, and has a better powertrain than the Avero (5-speed automatic VS 4-speed).