I retested the Shark Stratos to see if it’s still worth the investment four years later – this is why it’s still one of the brand’s best in 2026

Shark Stratos IZ420UKT cordless vacuum cleaner on pink background.

At Ideal Home, we make it our mission to keep on top of exciting new launches and ever-changing cleaning technology. But the Shark Stratos Cordless Vacuum Cleaner proves that if it ain't broke, there's no need to fix it.

Yes, we originally tested this vacuum cleaner upon its release in 2022, and it quickly topped the charts as one of the best vacuum cleaners out there. In fact, it's also been one of the bestselling cordless vacuum cleaners we've ever added to the site. But how does it stack up in 2026? We've retested it to find out.