So I am a college professor, and I wear a lot of merino v necks and cardigans to go with my dress shirts and tweed pants. I do some ivy style and also classic menswear, almost always with a knit tie if I wear one. I don't really wear blazers all that much, although I own a few nice ones. I've decided I want to invest in a really nice knit sweater, and I'm thinking of a shawl collar cardigan (don't have any). Any recommendations on a nice sweater that will work with my wardrobe? I want something that will last 20 years, both in quality and style. If appreciated any brands. I don't want to spend a huge sum for some fashion name, but I'll pay for a quality made piece. Perhaps the shawl collar cardigan is not what I should be looking at? Thanks for your thoughts.