If you're in a thrifty mode, consider buying this Spiritual Gangster Tank. It's a great product for a reasonable price. In this price range, you can also consider this Eileen Fisher Tank. It's also a popular item and won't break the bank. You might also want to consider this Sundry Tank. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're not a thrifty type, then what you're looking for is this Michael Kors Tank. It's more expensive but worth your money. Another product we're drooling over is this Akris Tank. It's pricey but you get what you pay for. And one more item you might be interested in is this Dolce & Gabbana Tank. 'Cause you deserve nothing but all the finer things!