I have a Pacific Energy Vista insert and it's great. Didn't turn the heat on all winter, and we had a long cold one up here. Bought the smaller unit, initially thought we would only supplement our heating, but even with a 2,600 sf house the stove performed outstandingly well.
Did research on many manufacturers, then spoke to a 5th generation chimney sweep. He said Pacific Energy really stands behind their product, plus the unit is very easy to maintain. No hard to get to areas to clean. If I had to do it again knowing that I can heat the entire house, I would have built out my hearth and installed a larger unit (Summit) with a larger fire box for longer burn times.