I can provide some information about some of the powerful vacuum cleaners that were available up until that time. Keep in mind that new models may have been released since then, so I recommend checking the latest reviews and rankings from reputable sources to find the most powerful vacuum cleaners on the market today.
As of 2023, some of the most powerful vacuum cleaners were:
Dyson V11 Outsize: This cordless stick vacuum from Dyson featured a high-torque cleaner head and a powerful digital motor, making it effective at picking up dirt and debris from various surfaces.
Miele Complete C3 Brilliant: This canister vacuum from Miele was known for its strong suction power and high-quality filtration system.
Shark APEX DuoClean with Zero-M: Shark vacuums are well-regarded for their powerful suction, and the APEX DuoClean model was no exception, featuring a self-cleaning brush roll for added convenience.
LG CordZero A9 Ultimate: Another impressive cordless stick vacuum, the LG CordZero A9 Ultimate, offered strong suction and a variety of attachments for versatile cleaning.
Hoover WindTunnel MAX Pet Plus: This upright vacuum was designed for homes with pets, offering powerful suction and specialized pet hair removal features.
iRobot Roomba s9+: For robot vacuum enthusiasts, the iRobot Roomba s9+ stood out with its advanced mapping and navigation capabilities, making it one of the most powerful robotic vacuum cleaners available.
Remember that vacuum cleaner performance can vary depending on factors like the type of flooring, the condition of the vacuum's filters and brushes, and regular maintenance. When choosing a vacuum cleaner, consider your specific cleaning needs and preferences to find the best fit for your home. Always check for the latest models and reviews to ensure you're getting the most up-to-date information.