I'm flying out in about a month to take graduate studies near Boston. People have told me that I will find a v-neck cashmere sweater (or two) indispensable. What color should a fair-complexioned, Chinese-type Asian guy like me get, for something flexible but not boring? Are there particular styles and quality brackets? Particular brands or sources that are good? I figured I'd end up grabbing something from Filene's or off eBay when I get there. Since I come from tropical Manila, I have absolutely zero experience (nor prior need) for sweaters and other cold weather clothing so assistance is appreciated.