With my 1/2 ton Chevy v6, and my trailer with aerator and slice seeder I can carry 3 yards. But, I will admit it is WAY TOO MUCH... the jack on my trailer, at full height only gives me 1.5 inches of clearance.
Delivery allows you to do more in a day too if you do not have a 1ton dump. You can save trips to the yard to get mulch/compost.
Learned that compost weighs a lot more... learned the hard way... can only carry 2 yards of compost.
Leroy