For something in the middle of the price range, consider buying this Loro Piana Rollneck. While the price is very reasonable, this product is an easy wardrobe update. It's also worth checking out this Loro Piana Turtleneck. This product is extremely popular and, just as importantly, not very expensive.
If you can afford it, then what you're looking for is this Loro Piana Rollneck. It's more expensive but worth your money. While you're at it, also have a look at this Loro Piana Rollneck. Yes, this item is expensive, but it does not mean it's not worth it.