I meant, if you already have your Zodiac/Zeta, there's no point in remelding your spear and wasting all that money again for a 1 DPS increase.

As for whether you should go for a DET/CRT or what I've theoretically calculated... I'd wait until you've gotten all 75 Alexandrites first. You can meld max DET onto it if you'd like (31 DET), but I'm waiting for more reports from other people before I make that the "Official" CostPS BiS.