i think the newer brush rolls with firm brushes work better, i own a G3 by choce as its the best looking in my opinion,the drive i heavily assisted and the bag, belt lifter and emptor seem to be more rugged.
you can use a new style brush roll on a g3, you just need to remove the led module, or replace the whole nossle.
i honestly think it is the best vacuum in the world.
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