opinions wheel loaders case / case poclain

hello, if it were possible we would like to know opinions on performance old wheel loaders from the 90s case / case poclai, strengths defects performance performance,

Model Number: Case 621 B (90's of construction)? what do you think?
blades with capacities from 2 to 3 cubic meters. thank you...

opinions wheel loaders case / case poclain