Here are five professional sewing machines that are often recommended by experts and have positive reviews:

1. Juki TL-2010Q:This machine is popular among quilters and sewers due to its powerful motor, fast stitching speed, and large work area. It also has a thread trimming function and automatic needle threading.            reviews

2. Singer 4423 Heavy Duty: This machine is designed for heavy-duty projects, such as sewing thick fabrics and leather. It has a high sewing speed, 23 built-in stitches, and an automatic needle threader.                 reviews

3. Brother PQ1500SL: This machine is ideal for quilters and sewers who need speed and precision. It has a fast sewing speed, large workspace, automatic needle threader, and adjustable presser foot pressure.           reviews

4. Janome HD3000: This machine is a versatile workhorse, capable of sewing through thick materials, denim, and even multiple layers of fabric. It has 18 built-in stitches, automatic needle threading, and a jam-proof bobbin system.        reviews

5. Bernina 790 Plus: This high-end machine is designed for advanced sewers who want the best features and technology. It has a large touchscreen display, customizable stitch settings, and a variety of advanced functions like automatic thread cutting, embroidery, and quilting.            reviews