If you're on a thrifty budget, your best bet is these Lysse Leggings. It's a great product, while not very costly. Another strong contender for your wardrobe is these Leggings. While the price of this item is not very high, it will certainly attract a lot of attention. You might also want to consider these MICHAEL Michael Kors Leggings. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you want to treat yourself, then what you're looking for is these Helmut Lang Leggings. It's more expensive but worth your money. While you're at it, also have a look at these Alice + Olivia Leggings. Yes, this item is expensive, but it does not mean it's not worth it. And one more item you might be interested in is these Tom Ford Leggings. 'Cause you deserve nothing but all the finer things!