v10 does make more torque but at a high rpm and it will be in a newer truck with the better trans, the 460 is unstoppable it will outlast the truck its in and makes torque right off the line and pulls to 3800rpm but you'll lose 3mpg or so (most 460s average 9-10 or 11 combined, some get 8 usually because it needs a distributor cap/plugs/wires/something along those lines)

i am biased to the 460 i love how reliable it is and that i can spin 37" tires, pull heavy trailers, and haul a bed full of rocks while still on 3.55 gears (though with these gears/tires i know the trailer is there if its over 5k or 6k lbs) all thanks to the torque comin on early. if you get a v10 look for a 3 valve i cant remember what years that is exactly but its a noticeably better engine

but this is my opinion plenty of people really love their v10s and have enough to say in its favor its a tough decision to make take a look at the trucks their in it will help make your decision