Pain: Hulk vs Weapon-X
Which transition would be more painful, James Howlett to Weapon-X i.e having molten metal bonded to bones*, or Bruce Banner to Hulk i.e rapidly increasing in size and mass from 5ft 9 1/2in 128lbs to 7ft 1040lbs?
*for this thread we will assume that the cooling time for the adamantium is the same as the Hulk's "Hulk-out" time