Where can I buy good knit sweaters?

Already have a few from the cheaper brands (uniqlo, h&m, zara). I now want to find a good quality, long-lasting (preferably wool) knit sweater. I don't want the huge, oversized baggy sweaters that are trendy at the moment, but I also don't want something that's too tight or too thin. Ideally, a thicker, warm sweater that's good quality (and hopefully not very expensive).

Any brands/styles? Most of the stuff I find at stores are either too baggy, or the material is too thin and not warm enough.