Power isnt a problem with the gasser, but the pentastar makes most of its guts fairly high up. On the biggest hills, with the most weight, yeah it might kick itself into 4th and run at 4000rpm. But you can still accelerate up massive hills if you want to. And unloaded, the thing is downright fast.
The extra torque of the diesel would be nice, but i just cant see how its $4000 nice. On the east coast, diesel is still notably more expensive than gas, making the payback even longer. Its not that the diesel is bad, its just that the gasser is so good. If you read through this board in its entirety, you'll find TWO examples of gassers that had issues. But putting those aside, no mention of ignition probs, electrical, charging, cooling, trans, a/c issues or any mechanical problems of any kind. No cv joint issues, alignment, brake probls, fuel pumps, computers.....nothing. Our biggest problems are cable stretch on the side door, and frickin' cup holder placement! I own 2 gassers, and my first has 105,000 on it in 11 months with zero point zero problems. I see no reason to complicate it with the diesels complexity.