They certainly are I agree with you there, SEBO certainly are ahead of their time in both design and technology in the simplicity of easy to use and maintain. Certainly isn't thats for sure, I love that you can inspect the brush roll and easily remove it. Dyson came close with their DC15, DC18,DC24 and DC25 in that you could remove the brush bar but needed a coin or tool to unlock the end caps!
They certainly have improved on the design of the vacuum cleaner. Thats what fascinates me how they use a lower watt motor but still their machines perform great, the brush roll is some of the key to that I suppose and simple air path too. Yes it will be interesting when the new EU law of 900 watts comes into play what they will do with the SEBO X. Maybe a new model or redesign to work with a 900 watt motor who knows only SEBO do!
Was that increase in suction power to compete with others on the market, or was it so the turbo head worked on the hose?
I think the Airbelt is a great idea, how low was the wattage on the C series when it first came out?
Thats interesting to know about the K1, was that because the buyers wanted a compact light machine compared to the C series? Interesting you say that about the K1 in that it could be the next model they redesign, a mini version of the D series that be interesting to see. Do you not think they will redesign the X series or the Felix at some point? Or update them both?