If you want our tried and tested opinion, you can’t get better than the Miele Complete C3. This vacuum cleaner has been designed to have an impressively high suction power, as it targets stubborn pet hair specifically. However, when looking for the best vacuum cleaner for suction, it’s always a good idea to check out the power of the motor. While a motor of 500W will do its best to pick up every piece of dirt and debris, those who want extra suction power should aim to buy one with a motor over 500W.