If it doesn't fall apart, the suction is great; however, the roller wheel continues to pull away from the main vacuum. I don't have a PhD in engineering which makes it impossible to assemble this vacuum cleaner. I am also old and unassisted and have musculoskeletal issues which makes using this vacuum very difficult. I think at the price Dyson is asking they could do better. At the beginning, the vacuum cleaner must already be securely assembled!
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