When buying used machines it's important to check reviews on the model you're interested in. For example, one of the Viking Designer models didn't have a cooling fan for the motherboard, and I recall reading on the chat groups that those who used their embroidery unit a great deal had problems with the motherboard burning out. I wish I could remember which model it was, maybe someone can help with this? I am not familiar with those who used the Designer for sewing only, at the time I was reading the machine embroidery chat lists.