Since you have a talking weapon, Finnean, that could be turned into ANY kind of weapon, even ranged, and it's upgradeable the entire campaign I can safely say that there is no such thing as "trap" choices of weapons.
I'm not too sure about that because there's some gaps even with Finnean, there's good long periods where it gets outscaled.
I chose Falchion as my weapon of choice (due to that sweet, sweet crit range), and 40 hours in (I'm playing slow (TB), just getting to Drezen), I've only found a +1 cold iron magic weapon aside from Finnean, which is basically the same thing + Ghosttouch.
Thank god I'm playing a Paladin with Divine Weapon Bond.
I'm sure eventually I'll find something better (I know Finnean gets upgraded after Drezen), but this has been quite a gap in terms of weapon upgrades. Considered respeccing because I've been using better +2 weapons, which I buff to +4 and beyond for bypassing all sorts of DR.
