If you insist on using aluminum nipples, I actually think Supercomps build stronger because they're only 1.8mm at the threads, so the nipple walls end up being thicker and they don't break as easily. But that's a lot of money to spend for not much weight savings. Unless you're going super weight weenie (and since you're using 823s I'm thinking not) you can't go wrong with straight gauge and brass nips.
Makes a stiff wheelset. And Strong! I busted a Mavic EX823 on a big case I had (I had to hire a lawyer!) - and the rim cracked on the point of impact, while the wheel still stayed true - kinda insane (not a single spoke broke). And I still use the same spokes without any indication of problems.
And I also like to see the look on people's faces when you tell them that each spoke costs 3 euros .
I managed to scoop up some mawri straight gauge Ti spokes a while back and if I could afford to build everything with them I would. They are 14ga so there aren't any issues with Al nips, and they are lighter than a dt super comp.