Take this for what it's worth (you know what they say about free advice), but my brother is a Mechanical Engineer for Caterpillar (in Peoria, IL). He works on the design of their diesel engines (and he holds many patents - yes, he is way smarter than I am) and has told me on several occasions that if he were ever to buy a diesel pickup, he would only buy a Chevy. He did say the the Cummins in Dodge are OK, but he would never buy a Ford diesel - said they are garbage.
Now, if you're buying a gas engine, that is completely different and that's not his expertise, so I have no information for you there.
I personally will never buy a Chrysler vehicle again. I've tried twice and had nothing but problems (especially transmissions). Even when everything is covered by a warranty, it's a complete pain in the butt to have to bring the car in, get a loner, wait in the shop, etc - especially when you have to do it all the time.