i was a World's Best user...loved it for a year or so.
then, i lost my job and needed something on the less $$$ end of the spectrum.
i'm now using PetSmart's house brand (Exquisicat) of unscented clumping litter, and i've found that it clumps harder and faster...which means less "crumbs" from broken clumps.

it also does a really nice job of controlling odor (we have two furbabies), which is really nice, since the litterboxes are in the laundry room, in the FOYER.

i haven't had any problem with dust or tracking. if anything, the dust is LESS that WBL. and for some reason, the cats seem to be kicking less of it out of the boxes. go figure.
i caught it on sale - $9.99 for a 40lb box.
i do agree, though. if your kitten is still a baby, stick with a non-clumping litter (or WBL) until he/she is older.