I love Honeyville as well and purchse a number of low-carb baking items from them.

They sell two variations of Wheat Protein Isolate: Arise 5000 and Arise 8000. I use both, and both work differently in recipes. The Arise 8000 is very similar to Vital Wheat Gluten; Arise 5000 is a lighter and fluffier flour, not like Vital Wheat Gluten.

Scott123 could give you the best explination about these flours. You should call or email Honeyville and have them give you an explination of the two flours. Like I said, they both work differently. I use the Arise 5000 as a base to my baking mixes and I use it heavily in baking, in general.

You'll love the stuff!