What!? Does nobody record saxophone anymore? Years ago I put a 421 on one of my fave sax players in the studio, and he suggested a 441, which he carried around with him. After using that, I went out a bought a used one for $250 and never looked back. Perfect sax sound every time, no matter which sax. Very little need for EQ when mixing.
Tried it on a bass cab, but wasn't crazy about the results. Maybe it was bad placement.
Haven't used it on much else, but will try it on drums after reading this thread.