I agree with Dee, it's a must for sewing- I couldn't sew without my sergers! I also have 3 embroidery machines, and I keep one serger always set on narrow rolled hem for linens and such. If you do any embroidery on t-shirts, I always shorten the hems on them as it makes them look so much better, but I press the hem in place then an inch above crease I zip it off with the serger- so easy, then topstitch. And as said, those small quilting pieces must have the edges serged before washing or you lose an inch. You don't need to spend $1,000, but don't get a super cheapie that doesn't sew well or you will hate it. I have never had a problem threading mine or anything else- they are both over 25 years old now- both Babylocks. Good luck- if you get one, take an owners class!