I am on my second serger. I actually broke one of my loopers. It could be repaired but I decided to trade up. Both of my sergers were Berninas. Unless you get a really inexpensive one they are all getting much eaiser to thread. I like the built in rolled hem feature. Pushing a button or lever sure beats changing a coverplate etc. As for the coverstitch that is easy enough to dublicate with your regular sewing machine with a double needle. If you do it on the regular sewing machine you don't have to worry about the coverstitch pulling out. I am sure you have had a T shirt that had the hem come unraveled. That only happens if it was serged with a coverstitch.