Well, I bought the 6-liter one since there are 3 of us, and it covers us more than enough. Excellent pot, guys, it cooks very quickly, makes no noise at all, and is super easy. Read the instructions; as soon as the valve rises to the 2nd ring, lower the temperature to 4 from 9, then adjust the time: 20 minutes for beef, 25 for beans, etc., it is amazing.

Good pot, the plastic parts are of good quality, but in no way does it have the quality of similar ones from the past, the inner surface resembles products from cheaper/economic companies, mainly the finish, the weight is somewhat lighter (obviously less and thinner stainless steel) but also the printing on the inside of the scale (numbers) with the increments, which is the same (and of the same quality) as other models from China!
Conclusion: Very expensive pot, in relation to its quality.
Unfortunately, I don't know if there is anything of better quality on the market now, even if someone spends over €250...

Bought 10l, easy and safe to use, practical closure, quick cooking and the capacity for 6 people is sufficient! Personally, it is a bit difficult for me to wash due to the weight. In this specific size, it is narrow and tall. Also, the quality of the stainless steel is not like the old ones, but I believe that overall it is worth buying!

I enjoyed every euro I spent on this pot. Quality, safe, and even if you have no cooking experience, if you learn to use it, it will make you the perfect meal very quickly. It looks good externally, and the 4.5 lt is very convenient for 3-4 people. If you want to be sure about the size, you should go see them in person. The 6 lt has the same base diameter of 18 cm as the 4.5 lt but is taller, and I didn't like it (maybe if it had a base diameter of 23 cm, making it shorter, I would choose it). The 8 lt is very large and very heavy and cumbersome for regular use; if you are cooking for 3-4 people, it is unnecessary. If someone doesn't have a problem with the height of the 6 lt, they can go for it for 5-6 people. Choose the one that suits you and then pay for it. It is worth the extra euros, although I don't have a comparison with any other manufacturer's product to say it is the only choice, but due to its German manufacturing, I trusted it with my eyes closed.

Purchased as a gift for a new couple,
Its use was typical and not very frequent. Its construction is quality.
There are several cheaper options available.