Well,a good outcome : returned legacy brushes, got the Vic Firth Jazz brushes, the white ones :
Stiff heavy-ish bristles but they still feel good and have some snap as well as swoosh.
The hard plastic handles are great for rim shots.
The lighter fare version would be what Jim is using, the Heritage brush.
These Jazz brushes have a much smoother 'retraction action'. Had a great rehearsal with these.
// case closed. I hope :)