I've driven both - my Fath-in-law has the V10 and I have the 7.3 PSD.

I prefer the PSD. There is not much difference (if any) in engine noise while in the cab. You can hear the diesel more if you're out of the truck, but not inside the cab. Diesel fuel smells less than Gas...so not sure where you're coming from there. I use my PSD F350 as a daily driver to work. No heavy towing really...just my all around vehicle. I get better gas mileage and have more power than any V10 out there...plus my resale value will stay higher...longer with the 7.3 PSD.

My Fath-in-law that has the V10 drove my PSD last week. His reply was, "Holy crap...my nipples are hard."

I think that pretty much sums it up!! He's now looking at buying a PSD and selling his V10 gasser.