A comment
Last spring, I changed the window in the kitchen, the profile chose Artec. In the other two rooms, KBE has been standing for the fourth year now, I am not complaining, but I wanted to compare. In general, I did not see much difference, although there are nuances. Outwardly, Artec is no worse, the thermal insulation is also normal, the heating season is now and the temperature in all rooms is the same. Although last year, with the old window, the kitchen was much colder.
Now about the nuances, fittings, and specifically the handles are much worse than KBE. After a couple of months, I noticed that the pen went loose, I intend to change it and if it works out for another. Apparently because of this, with a strong wind towards the window, a slight draft is felt in the handle area. Although, as I said on thermal insulation, this does not affect. I refrained from the recommendation, let everyone decide what suits him. In general, the normal option.
pros
not expensive, decent, good thermal insulation