If you are on a limited budget, this Calvin Klein Jeans Tank will fit the bill. It's a popular choice, while not very costly. Also check out this Gcds Tank. It's an item you'll fall in love with which also doesn't cost the earth. You might also want to consider this Thomas Wylde Tank. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you can afford it, then what you're looking for is this Kuho Tank. It's more expensive but worth your money. While you're at it, also have a look at this Marc Cain Tank. 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 this Uma Wang Tank. 'Cause you deserve nothing but all the finer things!