If you are on a limited budget, look at this J.Crew Tank. It's a fantastic product for a reasonable price. Another strong contender for your wardrobe is this H&M Tank. While the price of this product is competitive, it will definitely attract a lot of attention. You may also want to look at this Express Tank. This item is not expensive either, but it will make a difference in your wardrobe.
If you want to splurge on a luxury piece, then what you're looking for is this P.A.R.O.S.H. Tank. It's more expensive but worth your money. Why not take a look at this Kolor Tank too? Expensive, but worth every penny. It is also worth looking at this MSGM Tank. You won't regret the money spent!