Would have NEVER bought the 2.8 if was 4-cyl powered. I cannot stand the noise.
As I have posted countless times, they are just noisy.
Even my dealer reports the new 528 is "nice, but you still know there is a 4-cyl up there, it is noisy"..his words, not mine.
I chose the Hemi in my car for the smoothness, not the power.
Regardless of power, that 4 popper is working ALOT harder to keep up with the smooth, fine six it is trying to replace.

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Tyresmoker
'11 X3 2.8 MS/Mojave
'11 Jeep GC Overland Summit 5.7L
'08 Super Duty Power Stroke (retired)
'07 MB ML CDI (retired)
'04 Toyota Solara convertible (retired)
'03 Range Rover HSE (fired)