Sorry, it's not "what I can afford" but what I choose to spend my money on. EPA rates the 5.7L V8 at 15mpg combined and the 3.6L V6 at 19 combined, a 27% leap in efficiency. Regards to power the V8 is only 17% more power, yet 58% more displacement.
I could queue up some pictures of a slender athletic gal standing next to a chubby eating a doughnut, but you get the idea.
The reason for all this is that the Pentastar is the most advanced engine that Chrysler has ever manufactured. One of Ward's ten best engines two years in a row. Next year it will be in 13 vehicles.
Also I'm not too keen on that variable displacement thing on the V8. That was a disaster for GM when they played with it back in the 80's.