A comment
Last year, I was tortured to repair old radiators in my house and decided to buy new aluminum radiators. My choice fell on aluminum radiators Solar SL500-100, manufactured by FONDITAL. I would like to say right away that the price of them, compared with the bimetallic ones, is half the price (they cost me just 300 rubles per section, which is quite cheap for our city).
In addition, the Solar SL500-100 radiators have a rather small weight, which is good for their transportation, loading / unloading and, in fact, for the convenience of their installation. Since I installed these radiators, I forgot about the problems with the heating system in the house (before that, the old radiators constantly clogged and flowed), new radiators have a rather large percentage of heat transfer, even in the coldest winter, the rooms always had warmly. I would like to note their aesthetic advantages, radiators have a very attractive appearance, which allows them to fit into the interior of any apartment!
pros
Pretty cheap price, excellent workmanship, a large percentage of heat transfer.
Minuses
I did not find minuses in these radiators.