I have been a Pfaff fan for over 30 years. The cost of a new Pfaff serger is almost $4000. The serger is really utilitarian. My Pfaff CoverLock 3.0 is older and temperamental with thin chiffon, thicker linens, denim and cotton. It can also be a threading monster. This KPCB, taken out of the box delivered remarkably. The instructions.....well.......like other products from China is dirt poor and difficult to comprehend. So do not expect much in its documentation....ever. Chinese manufacturers never up date operators manuals. But for the price you cannot argue that it performs well, and as long as you tie on new thread to new spools or colors, you may never have to thread it manually. Very easy, light weight too. The power switch for the light bulb lights up the machine like the tip of the Luxor in Las Vegas. I shut it off. The bulb is not recessed and shines in your eyes. Otherwise it saws through the thickest of fabrics, with all 4 threads without breaking. Recommended serger on a budget.