I would say that one should always aim for high quality tyres, as they are so important from a safety point of view. It is the tyres that keep us on the roads and out of accidents. The better tyres you have the better performance you will get out of your car and the better safety properties.
During the winter a high quality winter tyres can often be the difference between a near accident and an actual accident. Most people want to make sure that they are on right side of this and therefore buy high quality tyres. You definitely want to ensure that you have maximum grip during the winter season and the shortest possible braking distance in case you need to stop.