there is nothing better than real leaves for those cute little buggers. I grew up raising them as pets myself!
I have both regs and zebras right now. I see no diff at all, in fact, the zebras took one day longer to hatch. Are a bit smaller and the hatch rate is less than the regs.... I ordered the same amt of eggs.
I think it is just a marketing gimmick.
however, at 3/4 to 1" length my zebras are black, NOT stripped.. I think I ended up getting reverse zebras..well, I wont' complain cuz they are cool looking.
As a child, in Asia, we got only the white regs. However, occasionaly one of the worms would spin gold cocoon.. and those were highly treasured... they were really rare.
Handling both at the same time, to me, the zebras are softer and seem weaker. Heck, they are rare and more expensive, how does that make them stronger???
btw, silks do not stink. They have a pleasant smell when fed on leaves. The ones that come with the chow smells sour. THey thrive on leaves.. with chow, they die off thanks to the mold and the bacteria. I never lost a silk except to occasional injury..