I have the Babylock Quest Plus (purchased used) and it's my understanding the Serenade replaced the BLQP...I kept having problems with tension issues and skipped stitches. I was going to have to drive 2 hours to a tech, so after becoming my own machine technician, I found 4 threads wrapped around the bobbin case housing and since those have been removed, the machine has been sewing pretty good...FMQ'ing on this machine is a breeze and I love the built-in walking foot, but it has snap-on feet, which I don't like, it doesn't seem to have a function button to move my needle L or R, (If anyone knows, please PM me and tell where it is...:)) for a couple of feet, I have to remove the original shank and replace it with another shank/combo, such as the FMQ'ing/darning foot....Good luck with your search.........