So every weapon with an attack speed of 0 grants an additional attack per round? Sick, didn't know that.
About Anguvardal: Strength above 22? I don't think so, unless you're evil aligned. If your not evil alignments the maximum you can get as a warrior type class, is 21. 18start, 19 tome, 20 Lum, 21 Deck, 22 if you're half-orc, as you said. So basically it is beneficial for every char, except evil ones and/or half-orcs. Also note that not everyone is playing with max. power-gaming stats.
Spectral-Brand: Ya, probably better main-hand, forgot to add that. But well, don't forget there are even better main-hands, so someone with scimitar proficiency might want to place it in his off-hand for the negative plane protection.
Arbane: Well, PW: Stun can be really, really, annoying
Runehammer: Well, same as Spectral Brand. Can be used for main-hand equally well. Nevertheless, it's a decent off-hand.
Sword of Balduran: Well, as you said, money is not really an issue, especially if you use pick pocket whenever it's possible. So I'm willing to pay some gold to add 10% magic resistance occasionally
When I said Kachiko's wasn't even worth the money for me, that was more of a rhethorical thing :> As I mentioned above, I wasn't aware of the 0 speed factor thing.
Btw. are you sure about the speed factor thing? That'd shed a whole new light on weapon choices for me
Edit: Just checked it. I've got 7/2 attacks per round using Scarlet Ninja-To, but only 5/2 using Usuno's Blade. Maybe you're using some kind of mod? Though I seem to remember you posting in another thread that you're playing absolutely mod free.
About the archer thing: As far as I know, rangers, including archers, actually can use the amulet of power. Meaning I'm pretty damn sure, since I have a savegame of an archer main character wearing it ^^
So long,
Sol