This is an awesome little machine for the money. Yea... The plastic is a little cheap and it is a little loud but you cannot beat the price or the power. It is perfect for hard surface floors. No it does not leave marks on wood floors. If you drag the cord under the wheels you'll get a mark from the wax on the cord but most people with a hint of intelligence should know better. No the canister does not easily tip over. I honestly don't know where some of these silly reviews are coming from. This is a great little vacuum for the price. If you want perfect go spend two hundred dollars.