That was very helpful, thanks. What I meant by "better" is - do the winter tires that I can put on my current set of wheels perform better than a winter set? Regardless, you make some good points. It may just be less of a hassle to get a new set all together and simply change it winter to summer and so on. I have two follow up questions given what you said:
1) Why would replacing the tires every season run the risk of damaging them and the rims?
2) Is it preferable to get winter stock wheels that aren't as wide as my current ones, and that aren't 19'' - in other words, will I see a major difference in stability and safety on the road with such tires?