I just built a 3.8 supercharged powertrain for a '99 Regal GS...knocks down good enough mileage (20.4-21.2 MPG in mixed driving), very docile, yet can get up and scoot when the foot goes to the floor. I prefer Mopar stuff, but I can definitely see points in "Other" camps.
Let's not forget that Chrysler brought us the 2.2/2.5 L motors which ate headgaskets (unless you knew/had the heads machined, used new bolts and MLS headgasket) and followed that raving success with the Neon twin cam which weeped oil out the headgaskets, and many times then popped the gasket. Same permanent fix as the 2.2-2.5...so, Mopar has screwed folks just like every other manufacturer.