1h no shield is the way to go.
Imo, both polearms and 2h are fine. As is 1h.
tbh, I haven't found anything I find particularly OP compared to other things. When I get killed by anything it's 90% of the time a skill difference and 10% of the time bad luck/ping/etc.
Sure, some polearms are VERY fast for their size (GLA), but it really doesn't matter which weapon a good player wields, he will kill you with it.
An average player with an OP weapon still gets killed by a more skilled player.
Just give it some time, re-adjust to your new animations/speeds/weaponstats and you'll be kicking my ass in no time.