As you know I got rid of my NC30 to Hiram. And picked up a new floor model Super 27 for 650.00 from local dealer a few flaws in the paint but never has been burnt or lit 2009 year of manufacture. After burning this for a couple weeks I feel I have a good handle on the operation and strengths of this stove. First of all I lowered my Class A in the chase 7 feet to get rid of 10 feet of black pipe inside. It also will gave access to the chase to clean from the bottom a big plus having access to the T and to inspect pipe from my access door on my chase. Back to the stove all I can say is better control I think with my draft the unregulated air to the 30s secondary air system was causing me to burn though wood to fast. The super 27 controls all air through the air control effecting all equally. I am having no problem getting nice wispy flames and stable burns with this stove. I can lock in the temps and air flow to achieve long consistent burns with spotless glass. I have enclosed pics I'm still cleaning and painting the walls but boy am I happy I made the switch.