Which? magazine put both Hoover cylinders they tested - the Octopus and the Sprint - in their 'don't buy' category for mediocre performance, although they both got good marks for laminate flooring...in overall ratings the Octopus got 33%, and the Sprint 21% - compared to the best buy Miele models, which got 79% and 80%.
As for the Octopus being on the market for a short time, it could be to do with the fact that the zoom hose, although undoubtedly cool, is just an unnecessary gimmick, added to jazz up an otherwise run-of-the-mill cylinder, and British comsumers never really go for gimmicks - hence the lack of headlights on UK machines, for instance...