Efficient but .... 25

For my first Dyson, I'm not disappointed with the result, very effective on carpets (car ...), hard floors ditto, I expect to see over time if it does not lose its famous aspiration.
I did not give it 5 stars because it is quite noisy, and its weight !!!, I admit that his muscle at the same time but already good vacuuming is not a joy in itself but it hurts in the arm after 20 minutes it is quite embarrassing for the rest ^^, and I imagine even for housewives over 50 years ...