don't know enough to answer the question but would like to address another part of your question. I used to think that I had sensitive skin when I sued a Sensor or an electric. When I picked up a double edge I found that I do not have sensitive skin and I can do this job with a broken coke bottle if I wish. My point is this, just becuase you think that you have sensitive skin does not mean that you actually have sensitive skin. I would recommend that you try shaving with non-sensitive products and see what happends. Of course I would stick with el-cheapo products in case I am wrong. I would go with Derby shave cream, since it is real real cheap.

I could be worng but I don't think that I am.