What Attack Bonus is Needed Endgame?

[Kilnedric]

Could also answer the question by answering what are baddies' AC?

I guess there's three categories I'm curious about.
1. High level, non-epic quests (Amrath, etc.)
2. Raids
3. Epics

My motivation is this: I took a break from the game for a few months and now I'm back. In that time there've been some changes. One of these changes is Stunning Fist using character levels instead monk levels, which now makes it too good to pass up for my Valiance build character. (Right?) Potentially on the chopping block to swap for Stunning Fist could be Power Attack, Empower Spell, Weapon Finesse. I'm leaning toward Weapon Finesse being the weakest link... as long as I can still hit most things. (There's currently a +2 bonus difference between my Dex and Str.)

[sirgog]

Outside of Epics - 45 with Power Attack hits almost everything on a 2

Epics - 50-52 if bosses are heavily debuffed (Exhausted, Acid Fog Armor Melt, Destruction, Improved Destruction), although more is better as you won't be debuffing trash and some of them are hard to hit. High 50s is good.

[MsEricka]

As above, high 50's to around 60. If you can't count on having mobs debuffed then carry a destruction or improved destruction weapon (or on your armor).