I will comment based on a) my experience with a Miele that cost around 200 euros which I had for 12 years (the predecessor of the current C3) and b) the use of the current one (for 4 months now).

Positives:
+ It has power, despite its "few" watts compared to the 2000-watt models of the previous decade.
+ The intensity adjuster on the handle has positive aspects and is useful if you need to change the intensity. In this vacuum, I think the adjuster is necessary (with the Miele, I can't say that something like this was needed - I vacuumed with a specific intensity that worked well on both carpets and tiles. Here, I needed to adjust it 1-2 times (or I haven't learned its tricks yet!)
+ It is relatively lightweight (compared to the 6-7 kg of the Miele I had. On paper, this is good. In practice, it seemed bad to me because it easily gets pulled along as you vacuum (especially in combination with the short spiral).
+ It indeed has a LONG cable - longer than the Miele.

Negatives:
- High up on the handle, there is a remote control (with 2 batteries) for starting/stopping and adjusting the intensity. In mine, this is problematic because the batteries have to be in a very specific position; otherwise, something shorts out or doesn't make good contact. I had to completely remove the battery cover for it to work, but now with jolts, the batteries may come out or it may need a little shake again to make proper contact. Here, the saying "the simpler, the better" applies. The vacuum does not start only with the switch on it. This essentially makes it capable of communicating with the remote control as it starts and stops from there.
- The spiral is short in length. This is a problem for me because with the slightest pull, you drag the vacuum behind you. My old vacuum had at least half a meter longer spiral. The short spiral helps with storage, but when vacuuming... I would like it to be a bit longer. It is also a bit stiff, and as you vacuum, you might drag things around you. In the old vacuum, the spiral was softer and "fell" down due to its weight.
- The Bosch nozzle has "hairs" in front and a rubber/plastic "blade" at the back. This complicates movement in both directions on a carpet, as the plastic blade gets stuck on the carpet fibers in one of the two movements, push-pull, and makes it difficult to find the right direction to glide over the carpet.

These three (especially the first two) are the most significant disadvantages I find.

Some other minor points:

- Collecting the cable requires you to bend down - it cannot be collected by stepping on it with your foot; you pull it a bit, and it unblocks. It collects well, though, and quickly!
- Being lighter and taller (and shorter in length) than my old one, it is more prone to tipping over when you drag it.
- I would like 1-2 more attachments (e.g., for mattresses or sofa fabric as well as a narrow tube for difficult spots).
- It does not have a release adjustment for when it gets stuck (because it has the + - on the handle). I think a release adjuster is more practical.

The noise depends on the intensity you use it at. It makes noise - it's a vacuum, it won't be silent!!!!

Without being a bad vacuum (it vacuums OK), I'm not sure if I would buy it again because of the 2-3 negatives I mentioned (hence the 4 stars).

2024-11-19: I removed two stars because its use is not what we call "smooth." The base has a brush only in the front and at the back, there is an elastic blade that gets stuck at the edges of the tiles if it falls parallel to the edge of the tile. The tube is made of hard plastic, relatively stiff, and with the movement back and forth, you have to be careful of the surrounding things. The batteries in the handle, while they are well placed inside, short-circuit somewhere and you have to take them out a bit to make proper contact. However, this way you can't close the lid, and I have to keep them without a lid. If the pole falls, you obviously gather batteries because they come out. Without the remote control of the handle, you can't operate it. Also, I can't find a good intensity. Where I operate it, it sticks and requires force to move the base. If I lower it one click, it becomes relatively weak. Finally, changing the bag, although theoretically easy, becomes a bit of a hassle due to a plastic protection for the vacuum hole (for when you remove it - it's good that it exists) that easily comes out of its position when you put the bag in, and then you search to find out what happened. I wouldn't buy it again!

Awesome vacuum cleaner and very powerful, we have it for 6 months and it's incredible on both carpets and floors.. It doesn't leave a single crumb.. I highly recommend it..!!!