D'addario: Half Rounds

I've been trying D'addario's Half Rounds recently, just to check out if the heat treatment does make any difference in tone/ durability.

I'm into the third week of use, the strings in question are more resistant than the XL version, however, this set costs about twice more. The manufacturer's claim of brigthness restoration is somewhat believeable because the strings do not feel dead as quickly as the XLs but they aren't as bright as they were when first installed either.