For me it is the cutting table to fit your height. It really makes cutting and pinning/bating so much easier. Mine folds up to make a full length mirror. So it doesn't take much room until I need it. The other is the lighting. Don't know how old you are, but I am 57 yrs old and for the past few years have needed brighter lights when I sew or read. Needless to say, the Ottolites are my best friend.