I'm not exactly sure the difference. I think one gets hotter than the other? I bought my woodburner at Joanns and it works great.
This is the one I bought http://joanns.com/joann/catalog/prod...RODID=prd34088
It looks like it's on sale and you can use a 40% code I think. I did that with mine and also got free shipping. So I paid like $4 for it.