You know, now I'm hoping that the upgrade at 99 separates the names for the three different Naboot +3s, because while the "occasionally attacks twice" one is really good on its own... the DA+10 one ends up making whatever your main hand weapon is even better. Ridiculously so. (With a main-hand Mjollnir (95), it's roughly equivalent to having a DMG:91 club in your off hand.)

We'll see, I guess.