Day two of Prime Day is live, and by now, the decision fatigue has almost certainly set in. As the anchor of Business Insider's Valued newsletter, I know this firsthand.
The BI Reviews team has published our share of comprehensive Prime Day deal guides. They're the result of a tremendous amount of deal hunting, research, and product expertise and testing, and we stand by them. Still, you're probably not looking for another list of 100+ "must-buy" options to sift through — which is why we're treating Prime Day like a bracket and crowning just one ultimate winner per category.
Our editors have spent months testing products at home and on the road, tracking historical pricing data, and figuring out what's actually worth buying when it's NOT on sale. In the lead up to Prime Day, we vetted testing insights and weeded out the cheap knock-offs to ensure every recommendation we make holds up. But after a while, even a carefully curated list of great deals can start to feel like homework.
For this live blog, instead of showing you hundreds of deals, I asked my fellow BI Reviews editors a simple question: If you could only buy one product in your category before Prime Day ends, what would it be?
Our tech editor picked the ONE TV worth the upgrade, our home editor gave me ONE vacuum recommendation, our culinary tester chose the ONE air fryer worth the counter space in most kitchens, and our style and beauty editor tracked down the ONE skincare device that's actually worth the splurge.
No fluff, no filler — these are the single best Prime Day deals in any given category, curated by experts who know these products better than anyone. I will be updating this post throughout the day as inventory shifts, so you can trust that every item I recommend is still in stock and sitting at a verified deal price.
Let's get straight to the upgrades.
If you only buy one cordless vacuum: Dyson Gen5detect Cordless Vacuum
Business Insider
Shop now:Dyson Gen5detect Cordless Vacuum (was $1,050, now $670)
"Prime Day vacuum deals can be incredibly sneaky, and the cheapest option is rarely the smartest buy. While I usually recommend Dyson's mid-tier V15 Detect, I did the math on this year's sales, and those bundles skimp on crucial tools. If you want the absolute best value for your money, the Dyson Gen5detect cordless vacuum is the only one you should put in your cart.
Until earlier this month, the Gen5detect was Dyson's flagship model. Now that they've launched a newer version, this powerhouse has hit an unprecedented 37% discount for the very first time. It outpaces cheaper models with up to 70 minutes of run time, 280AW suction power, and a convenient push-button power switch instead of Dyson's often annoying trigger control. Most importantly, it includes full HEPA filtration and the Fluffy Optic cleaner head, which uses a green laser light to reveal hidden dust and debris on hard floors. At this price, it's the single smartest Dyson investment you can make." - Jaclyn Turner, Senior Home Editor
If you only buy one air fryer: Cosori TurboBlaze
Jennifer Zyman
Shop now: Cosori TurboBlaze (was $120, now $85)
It's been a chaotic Prime Day for cheap kitchen appliances, but there's a clear standout: The Cosori TurboBlaze 6-quart air fryer is the one air fryer we'd buy today. Currently sitting at a sale price of $85, the TurboBlaze has officially hit its lowest price on record, well below the typical $100 average.
"It never wavered in any test, turning out perfectly golden fried and crispy wings," says culinary tester Jennifer Zyman. Unlike the dozens of cheap air fryers with slashed Prime Day prices, the TurboBlaze isn't just a glorified toaster. A powerful DC motor also handles baking and dehydrating — a versatility that makes its slightly fragile basket handle an easy trade-off. - Bronwyn Barnes, Deputy Editor
If you only buy one TV: Samsung S90F 4K TV
Business Insider
Shop now:Samsung S90F 4K Smart TV (was $1,698, now $1,198)
"My team and I review new TVs year-round, and it's getting harder and harder for different models to stand out. But the Samsung S90F 4K Smart TV rises above the pack. It uses an OLED panel, which delivers pixel-level dimming with black levels that completely disappear in a dark room. On cheaper LED TVs, dim scenes can look like a cloudy mess, but the S90F delivers deep, inky images with perfect contrast. It also boasts wide viewing angles, so the picture looks great no matter where you sit.
There are other excellent OLED TVs on the market, but none can match the S90F's brightness and color at this price. For Prime Day, it's on sale for $1,198, which is a record-low price. Since this is a 2025 model, stock will become harder to find as the year goes on, so I recommend grabbing it while you still can." - Steven Cohen, Senior Tech Editor
The post Live Prime Day deal bracket: We're picking one winner in every category appeared first on Business Insider
