For something in the middle of the price range, why not consider these Bootights Tights. While the price is very reasonable, this item is an easy wardrobe update. It's also worth considering these Spanx Tights. This piece is extremely popular and, just as importantly, not too pricey.
If you're looking to purchase a designer item, then you won't be disappointed if you check out these Wolford Tights. It's a costly but smart option.