My general rule is that I don't wear wool, because I find it so itchy. Over the years I've been given a couple cashmere sweaters that I like when I wear them over other items. But since I'm generally a bargain-oriented shopper, I don't really know where to look for more cashmere. I'm willing to save up for a good brand, but I want to make sure that it will last and is worth the cost. Any recommendations?