When it comes to table top attachments I have couple of questions: 1. How deep does the table top really need to be from the front edge to the rear edge? 2. How wide does it really need to be from the needle to the left outside edge? 3. What do you use the table top for? 4. What accessories like guides / binders / etc if any do you use with the table top? 5. What class of machine do you use it on Class 341, Class 441? Hoping for some good discussion / experience.