1. Brand Reputation Renowned brands like Brother, Juki, and Bernina often command higher prices due to their reputation for quality and durability. Investing in a reliable brand can lead to long-term benefits, including better customer service and the availability of replacement parts.

2. Stitching Basics Practice your straight stitching, free-motion quilting, and even zigzagging techniques. Each offers different textures and designs, enhancing the overall appearance of your quilt.

3. Better Grip and Control Thick threads, being more substantial, provide better grip during the sewing process. This is particularly beneficial for those who are new to leatherworking, as it offers added control when stitching. The increased thickness helps prevent the needle from slipping, allowing for more accurate, even stitches.

On the other hand, heavy-duty machines may have a steeper learning curve due to their advanced features and capabilities. However, this shouldn't deter beginners. Many heavy-duty models, offer helpful tutorials and guides to assist newcomers in mastering their machine's functions.

Heavy duty machines typically have higher maximum sewing speeds, around 1500 stitches per minute, versus 1000-1200 stitches per minute for standard machines. Again, this allows them to work through heavy fabrics more efficiently. However, heavy duty machines also tend to sew better at slower speeds, in the 500-800 stitch per minute range, for optimal control through thick seams. So they provide a wider speed range to suit the fabric.