Jimmyp: I wish you the best of luck in your choice. I am NOT much of a motor-head myself but I was a dedicated Ford truck-man throughout the late 60', 70's and 80's. Owning several V-8 Ford F-250 4x4's over that time.
Then in 1996 I bought a Dodge Cummins diesel 4x4 with extended cab and manual transmission. Reliability wise (and M.P.G. wise!) it has been the BEST truck I have ever owned. Not one thing has gone wrong with the engine and the driveline in the intervening 24+ years and 140,000 Hunter and fisherman type miles!
Plus my rig gets 21 to 22 M.P.G. on the road.
I have several friends that have MONSTER numbers of miles on their Dodge Cummins diesels (one has 370,000 HARD miles on his!).
I can not compare the two rigs you are interested in but I have sure been happy with my Dodge Cummins diesel rig (the VarmintMobile).
Again good luck.
Hold into the wind
VarmintGuy