Already have a Briggs & Riley Baseline Domestic Expandable Carry-On Spinner (U122CXSP), measuring 22" x 14" x 9".

Looking to get another larger size spinner that will be a checked bag only, but don't want to violate the 50lb. maximum weight restriction.

Should I get a Briggs & Riley Baseline Medium Expandable Spinner (U125CXS), measuring 25" x 18" x 11".

or

The Baseline Large Expandable Spinner (U128CXS), measuring 28" x 20" x 11"?

Which size, Medium or Large, would best accommodate 50lbs of clothes and personal effects?

Thanks