still looking for a used stove have found summers heat 55 englander nc25 and a few others that didnt look good. kinda leaning torward a multi fuel stove. what are the pros and cons would i use other fuels other than wood pellets . at the rate im going it will be spring before i get one. have a 8'' existing flue i use now with fisher stove . do i need special pipe from stove to flue.