Check out my posts in these threads if you like, i write'em long and give good advice for you. I like the concbarb. Hits hard, heavy defense. Can slash n bash your way through hell even in hardcore. Bonesnap is really a weapon of choice, but many other options are good too. It's a cool skill. I tried berserker too, but it's very different. Really had a hard time getting to grips with it. You hit, and then take immense damage, everything hits you. So you have to "snipe" the enemies as much as possible, and utilize your merc. It's hard, especially in hardcore. But it is challenging, and if you want a real hardcore challenge, do berserk barb. The damage is stellar, magic damage means zero physical resist for enemy, undead take big damage, bosses too, i mean you deal huge damage. At least a lot. But ... yes, you get it. Have a fun read :)
https://forums.d2jsp.org/topic.php?t=105109279&f=21
https://forums.d2jsp.org/topic.php?t=104463964&f=87
D2:R