The '08's do seem to have the most cooling system problems, I noticed that myself when I was looking for an '08-'10 F450. Several updates to the upper and lower rad hoses, the radiator itself, the T-stats and plumbing changes between the '08's and 2010's.
If you choose to do the replacement yourself, be aware that it's nearly impossible to get all the air out of the system without using a coolant lift. The Ford Shop Manual specifies using one on the 6.4, and you should definitely invest in one and use it. There are cheaper ones out there, but
this is the one I have.
:):)