I will ride in any of the big 3 trucks.......I have AAA road service to come get me. :-)))
Can't vouch for the others but Ram stands behind their 100K mile powertrain warranty. In 2013 I became the 2nd owner of a 2011 Ram 2500 w/5.7 Hemi & 85K miles. A year later the Hemi dropped a valve @ 96K miles which destroyed the engine. Ram replaced the engine - no questions asked - even though I was the 2nd owner & there were no paper/online records from the first owner.
The Cummins/Aisin combo should last & last but should you get a lemon, you can trust Ram to make it right. IMO they are working the hardest on improving their image & have recently matched Ford & Chevy/GMC in bumper-to-bumper quality. IMO, you can get a loaded Ram w/every option for a better price & the quality of the leather interiors is outstanding. Around here you can sometimes find Rams for $10K OFF sticker, so compare what you can get for the same price.