Got no responses in the JD forum, so am trying here. Am buying a 553 loader, but need some help with the carrier and bucket. Been to the JD website, but can't find much specifics on the 73" heavy duty bucket vs. the materials bucket. I was wanting to know the differences in weights of the 2 buckets besides"thicker back and side panels." Also, what disadvantages are there in the global carrier? My dealer doesn't seem to think I really need it, but I don't know exactly what attachments I may buy for the FEL in the future.