Concord Cookware 7-Piece Stainless Steel Cookware Set

This is low cost cookware and expectations should be low... the product packaging was good and from distant the cookware looks good but don't know if this will stand the test of time or any misuse (remember to turn the heat off). So far, in the every little time of use, I have notice the 2L to show discoloration at the pot's bottom - it is only used to boil water - for stainless steel this seems very odd. The other pots & pan have not shown this issue ... I have not tried in oven yet but will when I have a chance. Since I was looking at a 3L pot with lid at nearly the same price as this set, I will keep, as the other components are working well.