I don't have any vintage Bernina's but I have had 2 contemporary ones. IMHO, they are the best thing ever for garment construction, making bags, general sewing. I've made tons of clothes, 2 garments that won national awards and even drapes for 2 houses in mine. I've never had problems sewing any kind of fabric or any thickeness. If it will fit under the presser foot (even if I cram it under), it will sew it. I love my Berninas!