i personaly like the natural way. MTS, Ghost Shrimp, Pond Snails, Freshwater Flat Clams, and i always have a few fish in there while cycling though. but the mts clean the substrate, ghost shrimp help clean anything in the tank that it can eat, small things. the pond snails help clean anything on the side walls. and the clams filter the water. then the fish just help keep things moving around. but thats how i cycle a tank after it's already going. i'm not sure these little critters will help much with a new tank.
so do what the first guy said maby. (not an expert at cycling new tanks.)