My Keystoker 90,000 TV is plumbed straight up through a chimney up through an 11' ceiling. My LL Poconos are through a wall and a power vent. Some observations.....yes I notice the chimney and stove rusting with the Keystoker that I seem unable to stop in the summer. With the Pocos I break the whole chimney down and just put a block of wood over the hole in the summer - so simple. Score one for LL. However, I do notice the Keystoker puts out a little more heat due to radiation from the chimney - score one for K. Haven't tried the 50w bulb yet but I have done everything else. I'm suspicious that the chimney won't last. I am also suspicious that the SWG units won't last either and yes I do clean out use the right oil etc..
So I'm sitting on the fence and my a** is getting sore.