I bought a multispool holder for one of my Vikings....but alas....it is mostly a dust collector.....My Vikings had two spool holders on the machine and I only very occasionally like maybe once or twice in the 30 some years have I used a twin needle with different colors.....I thought it would be cool for embroidery....but actually I found it easier to just line up the various colors I needed to the right of the machine and place the right spool on the machine at the right time....Now a walking foot is absolutely essential in my opinion as is an open toe foot and a piecing foot....I actually like the one with out the blade guide best...but some folks really like the blade guide...I am somewhat of a foot hog....so when ever there is a foot sale...there I am....I have feet for my Vikings I have never used....but who knows...someday I may just have a need for that fancy sequin foot I just had to have....