You may be shooting yourself in the foot. Look at that durability and think about how fast the Legend ball is going to get used up. You might pay more up front for the Callaways but you won't be paying it as often.
I used to use the Tour-SD because of the 65 credit tag until I was gifted the Callaway (s) ball. I was amazed at just how much longer they lasted with that extra dot of durability and it turned out the cost difference between the two was almost equal. No need to mention the added benefits. :-)
p.s., It was kinda cool when one of those SDs went into the drink-only 22 credits lost. ;-)