It doesn't really matter - I prefer opaque over the clear bins so that the roaches feel more comfortable. They certainly enjoy their privacy, and I think a happier roach is a better breeder.
One thing to look out for is in the heavier duty bins (some of the rubbermaids, for example) you can get the slightest amount of texture on the inside surface of the bin. The bin needs to be completely smooth... the smallest of B. dubia nymphs can actually get a grip on the very subtle imperfections and climb the sides of the bins that aren't totally smooth.