That Daily Deal has several sitewide and product specific discounts running right now. The extra 5% off deal is the best starting point for most shoppers, though the value you'll get from each offer depends on what you're buying and how much you're spending.
Shopping for a single item or two: If you're picking up one or two general products, the 5% off sitewide deal will serve you best. This works on anything in That Daily Deal's range and gives a straightforward discount that beats the 3% alternative. However, if you have your eye on the Force1 Velocity Fast RC Boat, the dedicated 40% off offer on that specific item is hard to beat and will save you far more than any percentage off the whole site.
Looking at the high speed USB-C charger bundle: The 53% off deal on the 3 pack of high speed USB-C wall chargers with three USB-C charging cables is excellent value if that's what you need. This focused discount outperforms the sitewide percentages and gives you a complete charging solution in one go.
Browsing selected products: That Daily Deal has multiple offers on selected items—71% off certain products and up to 70% off selected products—which can deliver substantial savings if you find something in those ranges that appeals to you. These deals typically beat the sitewide 5% or 3% offers, but they're only worth considering once you've spotted a product you actually want to buy.
First time customer or regular shopper: If you're not yet signed up to That Daily Deal's mailing list and you're planning to shop regularly, signing up to the newsletter for special offers and promotions is a sensible first step. You'll gain access to future deals beyond what's shown here, though for your immediate purchase today, the sitewide discounts or product specific offers above will give you an instant saving.
At checkout: Only one offer will apply to your basket, so compare the discount each option produces on the items you've selected. If you're buying the RC boat or the USB-C bundle, those dedicated deals will almost always save you more than the sitewide 5% or 3%. For everything else, go with the 5% off sitewide option unless you spot something in the selected products promotions that works for you.