There are other advantages to the heavy-duty bucket. You can bolt simple, cheap, structural steel pieces to it. I often bolt a couple 4" x 1/4" x 4 ft long pieces of angle iron below the bucket, in line with the loader frames. I use one of the 9/16" holes thru the cutting edge with a half inch bolt and drilled 7/16" holes, thru the bottom of the bucket, about half way in, for a 3/8 bolt to hold each one on. The resulting "forks" work great for moving and loading logs, or moving pallets, etc.. A couple wood "fork-extensions" bolted to the angles work great for putting the heavy cap on and off my pickup truck without any help.
I also drilled a 3rd 7/16" hole, near the center of the bucket (in addition to the two in line with the loader frame for the forks). I use that hole, and two of the factory 9/16" holes, closest to the center, to bolt a 12" x3" x 30" long, steel C-channel below the center of the bucket. That makes a great "tree-spade" for quickly moving trees and shrubs. It also allows the front loader to dig a narrower trench, much like a backhoe. I did have to upgrade the (2) 1/2" and (1) 3/8" attachment bolts to grade 8 to keep them from shearing when I dug a ditch for a drain tile, thru some rocky soil along my old barn. That was a tough job, but the heavy-duty bucket held up perfectly. I spent less than $10 on the bolts and did not need to rent or purchase a backhoe to get the job done in a couple days. I would still be digging, 6 months later, with a pick axe and shovel, without the tractor and it's heavy-duty bucket. I found the c-channel in my scrap pile, so that was free.