Hi! We have a drolet escape 1800 stove, new. And are looking at our options for installing. We have a local stove company quoting Amerivent double wall pipe at $1380 plus $650 install. And a local guy quoting $2000 for excell piping and $700 for install. The local guy is insisting that the amerivent pipe is not the way to go and only the excell will do. I want to buy pipe from Lowe’s but can’t find anyone to do the install! Thoughts on pipe brands?