I love cordless vacuums, and I don’t just say that because I’m one of CNET’s primary testers of the category. I say it because switching from corded vacuums to cordless vacuums was a big quality-of-life upgrade, thanks to the ease of use and maneuverability around my apartment. The downside is that cordless vacuums don’t usually match the suction power and cleaning capabilities of upright or canister models.  Shark’s PowerDetect Transformer 3-in-1 is the company’s attempt to address this trade-off without forcing you to buy multiple vacuums. “The upright vacuum has looked and worked the same way for decades,” said Petra Oman, vice president of marketing at SharkNinja, in a press statement. “We saw an opportunity to rethink the category by eliminating the bulky hose and creating a system that adapts to the way people actually clean. Transformer delivers the deep-cleaning performance consumers expect from an upright, with the flexibility and reach needed to clean everything from floors and carpets to stairs, furniture, ceilings and the car.” The main upright dustbin is detachable when you want to use …