One of them is a very old (> 10J) Rowenta Artec with 1400 watts, then we have a fairly new Rowenta RO 4662 Silence Force Compact "Eco Intelligence" (2011) with just 1400 watts, and then we had a very cheap DirtDevil Skuppy, the had to be replaced (incredibly noisy, dust bag exchange unreasonable, suction very mediocre and even tube defect).
From the suction ago Siemens VS06G2410 is absolutely perfectly with 2400 W, there is nothing to complain about. Whether you really need 2400 W remains to be seen, but who needs a lot of suction, is sure to be very happy with it.
Less satisfied we are with the volume that to the minimum setting is very quiet, but since the suction is it then also very minimal and not really useful. At medium or even full power of the vacuum cleaner is very very noisy, even in direct comparison to our other vacuum cleaners.
Nor satisfied we are with the accessories, which consists only of a joint and a upholstery nozzle.
When our children have the vacuum cleaner not unpacked very rudely (box defect), I would have sent him back again and replaced with another, slightly more expensive Rowenta RO 4662.
Would have expected more from Siemens.
