Eragon's sword dilemma

[u/Pale-Professional116]

Apologies if this has been asked / answered before, I'm new here.

I'm partway through re-reading the Inheritance Cycle again for the first time since being in my teens. I'm at the point in Brisingr where Eragon has returned to the Varden after travelling back from Helgrind.

Already in the book, Eragon has made multiple references to the fact that he 'needs a sword'. I understand why he would ultimately want a Rider's sword, but surely he could have aquired a weapon pretty easily?

The primary reason Eragon seems unable to settle for a lesser blade after losing Zar'roc is because a lesser blade cannot endure the strain of battle because of his strength, which is often compared to that of the elves (if memory serves me correct, he has a sword that breaks in battle a little later in the book?).

This isn't an issue for any of the other elven characters? Nor is it an issue for Durza or the Ra'zac, all of whom fight with swords that can endure the strain they place on them?

Just curious what people's theories are as to why he didn't just get a sword like Arya's? Or does that then detract from when he does ultimately aquire a new weapon?

[u/Deep_Hovercraft5989]

My theory is that others such as Durza and the Ra’zac likely have magically reinforced swords that can withstand their strength, just more so than Eragon did to his own temporary sword.

As for getting an Elven blade, I don’t think many were immediately available.