I have a 2000 Ford F-250, 7.3 diesel and I'm biased but I do know something about each.

I have heard that the aluminum heads on the Duramax's are giving up at about 60,000 miles. They ride more like a car but you pay for it big time in overall durability. I rode in a four door and it was nice but the durability isn't there and neither is the price.

Whoever said the cummins is the quietest must be high. It is the loudest out of the three. It also has an outdated 4 speed transmission.

I have heard of some transmission problems from Ford but not from anyone that I know. I don't know the exact numbers but Ford has put a very good warranty behind the new transmission, and the one in my 2000 has performed flawlessly over 78,000 miles. The only thing I did was replace the water pump and I only paid a $100 with the powertrain warranty deductible.

As far as power goes all three will get the job done in the diesel market and all have excellent fuel economy. However, the new Ford engine will leave the other two in the dust.

I'm not sure how Toyota fits in here or why it was mentioned, you can't even make a comparison. In my opinion they are junk and I have ridden in them all.

I would stongly suggest staying away from any of the gas motors especially if you are pulling. The diesels now, are quiet, they love to pull and the fuel economy is unbeatable. Take a test drive in one of the new diesels and you will be amazed at how quiet it is inside and out, it's also 600lbs lighter than the old 7.3 in the Ford. 1.Ford 2.Dodge 3. Chevy