Counterpoint, I am NOT happy w/ my VC Encore Cat... Purchased used through Elk, one of our former members, who in retrospect seemed to have some ulterior motivations in pushing VC as hard as he did...
My wood is all split and stacked in a woodshed for at least 18 months, if not longer. It is mixed hardwoods, primarily oak and maple.
I'm connected by a stainless tee to a 25' high flue w/ a 6" ss liner, with about 7 feet of the chimney above the roof.
I like the top load - it is very convenient to be able to put the wood in that way as opposed to the side load of our old smoke dragon. I do get some smoke when loading, but not a lot. The ashpan system is wonderful, especially since I have two pans, which lets me swap them out in a few seconds and then take the full one out later at my convenience. I do wish the pans held more, but that isn't a big deal.
It does seem reasonably efficient in it's wood consumption, and It does a reasonably good job at heating our house down to about 20°F or so. Below that the gas furnace starts coming on to supplement it.
BUT....
I get LOTS of creosote. I would estimate enough to pretty much fill a 5 gallon bucket each time I clean in the spring.
I see a lot of visible smoke most of the time, except when the fire is in the coal stage, or close to it - which doesn't say much for it since pretty much any stove will burn clean at that stage.
The refractory package is falling apart on me - though I've done my best to glue it back together with furnace cement and stainless safety wire.
The adjustment screw for the bypass flap closing has frozen in place, and as best I can tell, the flap can't be removed w/o totally dismantling the stove.
I replaced the cat with one from "Stove combustors" and far as I can tell it doesn't do a whole lot...
Gooserider