If you're after a thrifty option, this Obey Tank will fit the bill. It's a foolproof choice, while not very costly. You might also want to consider this Bobi Tank. It's a product you're bound to love which also doesn't cost a fortune. You may also want to look at this BB Dakota Tank. This item is not expensive either, but it will make a difference in your wardrobe.
If you're after a bargain, you're in luck with this Tank in stock and waiting for you. You are guaranteed to love this piece. It's also worth considering this Nation Ltd. Tank. This piece is extremely popular and, just as importantly, not very expensive. And do check out this BCBGMAXAZRIA Tank! It's a very popular item and good value for money.
If you can afford to splurge, then what you're looking for is this Ramy Brook Tank. It's more expensive but worth your money.