I have 2, the Babylock Imagine that self-threads the loopers (whoosh!) which is the one I use. I love it and if wore out I would get another. I also have a Pfaff Creative 10 thread serger --what was I thinking when I bought it? I never use the Pfaff, it's way too complicated -- would love to sell it if anyone is interested. Unless you are doing a lot of decorative serging, a 4 or 5 thread machine is adequate.