We've been using it for less than a month so far. No obvious bugs were found. As for the noise, for me it is not noisy when compared with a conventional vacuum cleaner. But in terms of power, it is clearly inferior to our usual, old vacuum cleaner. I can’t compare with analogues, but it seems to me that the power of this model is on the verge. Taking less doesn't make sense. I regard this model as the golden mean. I'm not sure that if you buy more expensive you get a tangible difference.