if you're in a thrifty mood, your best bet is this Forever 21 Tank. It's a wonderful piece, while not very costly. Another smart option is this Tank. While the price is competitive, be sure that this piece will become a worthy addition to your wardrobe. You may also want to look at this Chaser Tank. This item is not expensive either, but it will make a difference in your wardrobe.
If you're gonna splurge, then you won't be disappointed if you check out this Marni Tank. It's a costly but smart option. While you're at it, also have a look at this Courreges Tank. Yes, this item is expensive, but it does not mean it's not worth it.