We recently installed the Ventis HEI90 a couple months ago and have loved it so far. The unit runs efficiently, looks fantastic with a relatively large viewing glass, and the fan is reasonably quiet. For our small space it is about perfect, able to keep the area quite warm when kept loaded. For larger spaces or cold houses it is on the small side with a firebox size that takes some skill to load well. Partial overnight burns do work with coals remaining in the morning that can easily be rekindled.