For something in the middle of the price range, why not opt for this Steffen Schraut Scarf. While the price is very reasonable, this item is an easy wardrobe update. It's also worth taking a look at this Eileen Fisher Scarf. This product is extremely popular and, just as importantly, not too pricey.
If you have enough to afford it, then what you're looking for is this Ralph Lauren Scarf. It's more expensive but worth your money.