So while talkinng to the rep at the stove shop while ordering my F500 he told me an interesting rumor concerning VC. It seems they are deep into research and development on a new line of stoves. Apparently they want to use quadrafire burn tube technology in the VC shells.. He said he heard that is why Quadrafire discontinued the Isle Royale in favor of the cast/steel hybrid explorer line. Both companies are under the same parent umbrella so it makes sense. That would be one nice stove.