I use Sani-chips, which are aspen, but not dusty.

Cons: I can't use them in the breeding tubs, because there's some risk of the chips getting lodged in the male's vent and causing Big Problems. So I'm back to newsprint for those, and it gets gross in there fast.

They're a bit expensive, and no one around here carries them. So I have to order from LLL Reptile, which makes them EVEN MORE expensive.