If you're looking for a good deal, we recommend checking out this Hanro Tank. While the price is very reasonable, this item is an easy wardrobe update.
If you want to splurge, then what you're looking for is this Carven Tank. It's more expensive but worth your money. While you're at it, also have a look at this J.Crew Tank. Yes, this item is expensive, but it does not mean it's not worth it.