I had the King K-368 vacuum cleaner, which I have evaluated, and I was quite satisfied with it for almost 2 years. Unfortunately, from the beginning, I noticed the problem with the quality, the problem with cleaning the bin, and then the issue of performance on carpets appeared. Because the vacuum cleaner does not have a carpet brush and its performance decreases as the bin fills up, deep cleaning of carpets becomes almost impossible.
I have had this particular vacuum cleaner for 3-4 months and I bought it for 125 euros. Here we are not talking about a handheld vacuum cleaner, but a real electric vacuum cleaner. In terms of performance and floor and carpet cleaning, it can easily be compared to a regular electric vacuum cleaner. It comes with a brush for tiles-carpets and a brush for parquet. Its bin is plastic and all its parts, including the filter, can be washed. Also, emptying it is a piece of cake. So, in terms of performance, build quality, and cleaning-emptying the bin, it deserves a rating of 5/5.
It does not have a detachable handle to convert it into a handheld vacuum cleaner. Nevertheless, the vacuum cleaner comes with an attachment for cleaning sofas and an attachment for cleaning corners, but you will have to lift it with both hands and perform the task. Unfortunately, this model does NOT come with a strap to hang it on your shoulder and does NOT come with a hose to attach these two attachments. The purchase of these attachments will have to be made separately. If you want to clean your sofa or bed, even if the weight of the vacuum cleaner is enough, you will be able to perform the task. If you want to clean dust from a high point, then due to its weight and size, you will have a problem and it will be quite difficult. The strap and the hose are very helpful, I say this because I tried it, but the size of the vacuum cleaner makes it difficult to maneuver in narrow spaces and this is a negative factor that should be taken seriously into consideration.
Finally, I would like to point out that because the vacuum cleaner is very powerful and the rubber wheels on its brush are very soft, even with the lowest setting, the vacuum cleaner literally "sticks" to the floor. If you read reviews from abroad, you will see negative evaluations of the vacuum cleaner due to its high performance!! I adjust its selector switch to the low setting and I clean the floors with the brush lifted. This helps the vacuum cleaner move more easily and even at low power, it removes everything from the floor. Unfortunately, I did not try a brush from another vacuum cleaner to see if things improve, if I do, I will inform you.
At the time of writing this review, the electric vacuum cleaner is available for 75 euros. At this price, I consider it a waste to spend 50 or 55 euros and get another vacuum cleaner of inferior quality and performance and struggle with it. Its weight, size, and design problem with its brush are not enough negative factors to discourage you from buying it.
On the other hand, if you have a certain age, a medical problem with your hands or feet, then even at this truly humiliating price of 75 euros, do not buy this vacuum cleaner because it will exhaust you immensely while using it, especially if you have a large house.
Positives: Performance, emptying and cleaning of the bin, build quality, very good dust filtration.
Negatives: Weight, size, lack of basic accessories, foot design that leads to tiring vacuuming.
Edit 03/05/20
I come back to say that the vacuum cleaner (and every upright cyclonic vacuum cleaner) definitely needs a foot with high energy efficiency indication, otherwise there will be a significant loss in its performance. Unfortunately, the high purchase price of the vacuum cleaner was added to the additional cost of the new foot, but now vacuuming is done with great ease. I will also remove one star because I do not believe it can achieve deep cleaning on carpets with long pile, fortunately mine are medium to low. I consider the price range of 75 to 90 euros, at which the vacuum cleaner is sold abroad, to be a more reasonable price.