Starts at 50% at 1 complexity, and goes up to RS Gold no reduction after 6. Prestige is how many floors you didn't repeat. Abandoned is the 4th theme floor of dung. The floor starts at Frozen and runs from floors 1-11. Abandoned 1 is 12-17, Furnished between 18 and 29, Abandoned 2 at 30-35, Occult from 36-47, and Warped after 48+.
The aim is to achieve floor 36 that has the highest level of xp for a dungeon (based on my own experience). The 1-29 mentioned above are the floors you do using difficulty 1 and 6 when you have 5 players in a large Dungeon with a 5-man difficulty. Don't be distracted by the difficulty when you are doing these floors as it is always recommended to select five.
Conclusion In the event that your non-void-related equipment bonuses increase to their maximum (for instance, Onyx or Berserker Rings (i), Completionist Cape, Chaotic Maul, Amulet of Fury) The void will become increasingly valuable. But, if you're making use of anything other than a godsword better off using Bandos and barrow gloves.
It's generally not necessary to attack using deflectors unless need access to Dragon Defender or are very low leveled and/or have weak gear generally. It is not possible to range with any body and deflector: It's a big loss in precision, but in this instance you will usually reap the benefits. Range is already the most accurate method of attack and the more damage it can cause will be a blessing (I'm sure amJordan can testify on the basis of his recent Armadyl encounter).
I'm not sure on this , however I'm pretty sure that magevoid will deliver similar results to melee. With void and maximum gear, you'll go between the 80s and 90s in terms of magic attack bonus. If you look at this in comparison to OSRS Accounts Ahrims and other similar equipment, you'll see significantly more than a 30 percentage difference (favoring ahrims). There are many uses of void, but they're just few and far between.