I have a Tutto (medium size) for my Babylock Quest. It came with an extra case which could be used for a serger, or for additional supplies, like fabric, notions, etc. It works great, and I feel that it cushions and protects my machine very well. One question, Sunnie.....I always thought that the Quest and the 6500/6600 were VERY similar. I'm just wondering why you have both, and how they differ?