Since more than four weeks, we use the Siemens SynchroPower and are, as already satisfied with the predecessor model. The suction can be regulated if curtains, carpet or parquet, everything will find the right strength wonderfully. The smell of burning plastic, which in the first week after ten minutes full suction has spread, is no longer available. Unfortunately, he constantly loses the Afterwards pull the upholstery nozzle accommodated in the housing, so a star deduction. Otherwise we would the Siemens Recommend SynchroPower each. However, the packaging was, when he came with DHL, the last disaster, battered and cut on one side. The only way.