Brake pads use a friction rating that measures when cold and hot, then uses a letter grade to represent the rating. Most manufacturers use pads that are rated to be less aggressive when cold then when hot ie, EF rated pads, Alfa uses FF rated I think. A is least friction, Z would be the most...though Z rating doesn't exist I think G is about as high as it goes..probably an exception but in general....
Alfa specifies the same friction at both temperatures, which is more agressive then most cars and while it does stop better/faster, it has the side effect of being grabbier and causing more noise when cold... They also contribute to the rotors being worn away faster since more friction when cold wears away more metal then less friction. (Again though, it's why the car stops so quickly even with tiny rear brakes on the base)
Information below for those interested, there are variations besides the friction rating that could mean a more agressive rated pad actually has less tendency to make noise then a more agressive rated one, as pad compound, thickness, and other factors effect that aren't part of how the friction rating is computed, this is discussed some in the article, not much though.
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...and for the price, I would take my chances. Another way to approach it, for the price, I would order those and the better ones/OEMs, use them until the better/OEM rotors arrive, then replace them.
