I have 4 sergers. I have made a few wall hanging totally on a serger and a couple quilts. I mostly use them for clothes construction and home deco.
I have 3 baby Lock because they have the jet air threading and are wonderful for threading. I have an older Bernette that I got about 20 years ago, I hate threading it, but it does the pretties roll hem that I use on lots of my table runners and napkins.