Just beat normal Duriel with my 1.09 Classic sorc. Static+thunderstorm, yeah! It helps that in Classic block % has nothing to do with dex.
Now to stealthily snipe all the flayers with my 3 perfect emerald longbow of doom! Yeah!
I need more strength for a plated belt! Normally I always have enough so I can wear a breastplate or whatever, but without socketed armor I went for Dex for my bow AR (and later spectral shard when I get it).
Don't mind me, I'm just super happy about Classic for no real reason. I haven't even tested the multi instance dll yet.
Hopefully I'll be making my BotD CB tonight (already decided on that bit), but the leech means that with my rings, I no longer need the leech from Arreat's. I'm considering swapping it for Crown of Ages (Baal WW barb) with 2 Um runes, but I like the 20% attack rating. I'm erring on the side of Arreat's, but I'm curious if anybody has gone down the CoA route before. If so, how did it fare?
You can run Baal without helm, he and his minions are easy to deal with. So, whatever helm you wanna put on, go ahead. Therefore, CoA will obviously be fine choice, you can do that with CoA no problem. If you want Arreat, sure, go ahead with Arreat. They will both do.
However if you want to have more speed on running, then Guillaumes is number one choice cause of CB and other mods. Resistances are not needed, only for merc. Pack solid amount of leech (12 will be fine) and ur good to go. As for AR, I used Ravenfrost. Okay, I like CBF part + huge AR bonus with it + cold damage. That cold damage is nice combined with Decrepify, monsters are nicely slowed on short amount of time, but since ur WW-ing them like mad, that will be decent.
But as you wish, you can go with CoA, so you can go with Arreat. Choose what you like most and have fun. WW barb is great Baal runner in terms of safety and speed.