Garrick DeMeyer from
crestedgecko.com works with blizzards, midnight blizzards, and blazing blizzards. They also work with hypos and supers, but then again who doesn't.
You can check out Marcia's site as well
goldengategeckos.com. She has some real nice hypos and superhypos, but I'm not sure what her blizzard projects are.
JMG Reptiles produce some real nice hypos and supers, but I don't think that they work with blizzards. I have bought animals from them and they are great.
There is also
The Urban Gecko and
Albey's Reptiles both of which have nice hypos and super hypos (The Urban Gecko probably has the best I've seen) but neither work with blizzards, that I know of anyway.