Might as well get 99 attack, some people are good with it some people don't like it because it's high combat low defense, if that's the case for ou just go zerker
If your bhing and you have 99 att
Then you can save cash by being able to use a dscim because you will hit very often
I have 99 att on my rune pure but im also 95 pray
I had 99 att before though and enjoyed it
It all depends what your doing
If your a decent brid as well then defence doesnt matter
So its up to you
But i dont reccomend staying 20 def
That rune really helps when your fighting mains.
For edge 1on1 pking high attack ini= literally useless.
99 Attack doesn't hit as well as it should on 70+def piety.
You could effectively brid though with high attack but it wouldn't give you any crazy advantages. High defense/low attack 'pures' are becoming the new thing.
At the same combat as a maxed 99 attack ini pure you could be a 60 90 70 turmoil tanker or 60 99 70 piety pure.
I sincerely suggest NOT leveling attack above 60/75 unless you're getting chaotic weapons.