Galaxy v1 lacks air and presents a flat wide stage.
V3 is a giant leap forward comparing to the v1, althought my distant memory could be wrong. The mid is still less full-bodied (or colored) than a mid-centric counterpart, say Fidus A91; but it has improved in other fields considerably. It is one of the few that I feel constantly the need to turn up volume in order to hear more details. And... the build quality is still a bit "sketchy-looking" (actually well-made but not polished or refined) compared to others.