If you are on a tight budget, this Aryn K Tank will fit the bill. It's a fail-safe choice, while not very costly. Another strong contender for your wardrobe is this EACH X OTHER Tank. While the price of this piece is not too high, it will certainly attract a lot of attention. You may also want to look at this Saks Fifth Avenue RED Tank. This item is not expensive either, but it will make a difference in your wardrobe.
If you're in a Treat Yo' Self mood, then what you're looking for is this Givenchy Tank. It's more expensive but worth your money. Another product we're drooling over is this Ermanno Scervino Tank. It's costly but you get what you pay for. You can also take a look at this Tank. You won't regret the money spent!