I have always gone chain except for T5 ( which is what I am currently in cuz well I cant afford the ebon and I had it made pre LU so stats still are good ) but it totally depends on your play style - if you group a lot then AGI is the way to go with STR in a close second ( imo ). I would suggest trying to stick to chain for the mit though - as there will be occassions where the tank loses a bit of aggro and the mob decides he wants to take a bit out of you - Now that I am int he T5 leather I can see the difference while soloing and when there is the aggro issue, just described - in how hard I take hits --- yea my str is much higher and my avoidance is up but when I get hit I get hit harder - so definatly suggest going chain -
PS. I just couldnt afford the Ebon for a set of that - so I went with leather cuz I could get a whole set for under 50g - but I'm lvling fast through this tier so hope to be back in chain very soon -