Best Vaccuum For Big Spaces: Dyson Outsize Cordless Vacuum If your biggest hold up on cordless vacuums is the run time and small dustbins, then we have your match. The newest Dyson Outsize Cordless Vacuum ($800) is the brands biggest and most powerful model yet. The full size bin, and 120 minute run time will make sure you can clean even the biggest space with just one charge. Image Source: dyson.com Dyson Outsize Cordless Vacuum $800 from dyson.com Buy Now