Re: Which build for Tristram?
Before the ladder reset i had a Uber-Trist barb. He was a Frenzy Barb with great resists but poor AR. His gear was as follows.
Arreats (40%ed jewel)
Highlords Amu
Beast BA (primary weapon)
Death Cleaver (off-hand)
Fortitude
Verdungos
Dracs
Gores
Ravenfrost
Dual leech ring (totally not relevant, but gotta go with what you got

)
2 x echoing weapons on switch
I only had 1 skiller, and the rest were +life/res charms
It does take a while, but in my opinion its better than the usual smiter uber-trister.
I wouldnt fancy a conc barb's chances in uber trist, but maybe its viable?
I'd say go frenzy though. If you go conc, you'll definately need a life tap wand, and if life tap wears off while you're attacking, you'll likely die before you can recast. At least with frenzy once your CtC lifetap kicks in, youre home free!
Good luck