Void melee w/deflector and OSRS gold barrows gloves is the highest you can hit with a 1 handed weapon and also the most precise
Same equipment but now using Cls and Defender versus void and deflector: Attack: +176 Strength: +163. Conclusion: Basically it's never worth it to melee with deflector if you don't do not have access to Dragon defender, are extremely low leveled and/or have really weak equipment generally.
Range void with almost any human body and deflector: You sacrifice a lot of accuracy but in this case, it usually pays off. Range is already the most precise attack style and also the higher harm will do wonders (I'm convinced amJordan can testify according to our latest Armadyl encounter).
I can't be 100% on this but I'm convinced that mage void will provide exactly the identical outcome as melee. With emptiness and maximum gear, you are going to get somewhere into the 80s or even 90s with regards to magical attack bonus. If you compare this to Ahrims and the same secondary equips, there would be a whole lot more than a 30% gap (favoring ahrims). There continue to be uses for emptiness, they are just few and cheap RuneScape Mobile gold far between.