One of the guys who bought the NC-30 is going to replace a 3100. Now he's hemming and hawing, thinking he'll not do the swap and instead, use it for a basement install in the future. Any obvious benefit to swapping the 30 would help my arguement to do so, even though I've never burned one. He'll have to build up his hearth, get it to R-1.5, current is only slate tile on durock. Pretty sure it's not enough for the 3100 as it is. He's not the type to pay attention to these things, that's where I come in. Thanks, JB EDIT: That's also why I'm here, to learn from others experiences. Thanks.