You really only need one of The Inner Mounting Flame and Birds of Fire. Only a year or two apart, same lineup. I'd suggest Ron Carter's Blues Farm if you're down with bass grooves, but I've never heard it recommended. Stanley Turrentine's Sugar is pretty sweet.
Does Freddie Hubbard's Red Clay count?
Fusion is an expansive genre and there's an enormous difference between Bitches Brew and Head Hunters.