I have been fighting the Noldor and was able to learn their secret armoury from their lords Alederian and Ithilrandir. Now I am wondering what the best choice of action is against them. Capture their lords again and see if I can get their weapons/armor or leave them alive just to deal with Eyegrim.

I have captured one of their lords right now and I am wondering which is better, his weapon or armor. It's Alederian, in which case, it would likely be his bow as his weapon. But I remember taking the armor from one of the noldor warlords and the armor was very solid and was wondering if I could get those anywhere else?