A few days ago I bought it, I have worked with it very little, but for its price (under 40€), it may be the best option, excellent! It is powerful and has few vibrations for its price, and what I really liked is its smooth start that doesn't scare or tire you. Also, the safety in case of interruption is great. You see it as a friend and not something you are in danger with. It is a bit heavier than the others, I suppose due to its good construction, good gears, etc. Maybe a professional would get tired with prolonged use, but then we go to wheels with a much higher price. I hope it proves to be durable.

Update:
One year later, even though its use is occasional, it works great! The missing grease from the construction was solved and filled (all companies are stingy with grease). The amount it had inside was minimal! Due to my large palm, its large handle has become necessary for me! Although its somewhat "rough" operation remains, it is an extremely convenient machine and trouble-free, at least for occasional use. I mainly use it for smoothing

It is the first professional (or at least semi-professional) tool that I acquire. I bought it on Black Friday from a well-known department store for 30 euros (for this price, it was the best I could get - otherwise, at its regular price, I wouldn't prefer it, because other brands at the same price are more well-known and you can easily find many reviews online). I use it as a hobbyist, meaning not every day, but on the days that I use it, it works for at least 6-8 hours. It is mostly used as a sander (I make constructions from pallets), so for now, I can only provide feedback on this area. The first impressions are very positive. The tool has a soft start, which those who have worked with powerful wheels without it will appreciate, as it not only prevents sudden torque in the hand, but also protects the motor. It also has an anti-restart feature, which is a very useful protection that, in my opinion, should now be standard in tools of this nature. Beyond that, the machine is very powerful, with a high torque. I intentionally tried to push it to its limits by using the entire surface of the sandpaper on the wood, and I couldn't "stop" it...... At least now, in winter, the motor did not heat up at all. In terms of build quality, I was also very satisfied. It has a very high-quality and sturdy casing with a long and high-quality cable. The large handle with storage space for the wheel changing key (which fits securely inside the handle) is also very positive, so it doesn't get lost. Overall, I am very satisfied and will post an update in the summer. Regarding Stanley, it belongs to the Black&Decker - Stanley group, and if you want to find related reviews for the company's power tools, you will find them under the Porter Cable brand, which is sold in America, as Stanley products are only sold in Europe and you won't find many videos.

*UPDATE 22/12/19*
The tool still works great after quite a bit of use (always as a hobbyist). At some point, it did need to be opened and cleaned, and the grease in the gears had to be changed. The only small complaints I have are firstly about the wheel changing key, which ultimately doesn't stay securely inside the handle and after a while of use, due to vibrations, it comes out of its position, and also with the protective cover, which is not so easy to install.