Is Zerker Stance a viable PVE with Imp Zerker StanceFollow

Its all in the title really!
i'm levelling solo PVE and i've found that i prefer to stay in Battle stance as the extra damage taken in zerker doesn't seem worth while for only 3% increased crit rating. I'm now looking down the talent tree and wondering if its worth picking up improved beserker stance when i get there? I can see the merit as a DPS in a group, but is it worth it for soloing, or does the extra AP still not make it worth while?

Most of your end game raiding is done in zerker stance imo. At least I'm always in it when I raid, unless I have to do the occasional stance dance or switch to defensive stance to tank a trash mob.

Once you get to lvl 70, the extra AP and Threat Reduction is quite nice. As for soloing, I use zerker stance because I can Whirlwind in zerker (something you can't do in battle). Soo...it's up to you to decide. I like being able to pummel targets as well, so I mainly tend to stay in zerker stance unless I am ganking helpless alliance in Nagrand, then I like to charge in and switch stances.