Hmm, I have problems to understand how a berserker would function at all. The berserk skill converts all damage into magical damage which won't let you leech and it costs 4 mana per swing, so you will run out of mana very quickly. It also reduces your defense to 0 and without a shield you will be hit all the time and you won't leech life either. Do you perhaps mean a concentration barb ?
Anyway, another good 2-handed mace is the IK maul - together with the rest of the set, of course. In Europe, the armor costs Um and the rest costs 1-5 pgems each. For rings+ammies you could try angelic ammy and 2 rings or (my choice) Metalgrid, Raven Frost and BK ring. However, I only have experience with a WW barb, so I don't know how good it works with other barbs.