Str MSoZ Sword options

So I’m looking to try out Str stack MSoZ for LoP. I notice that two weapon types are being used.

Either with high spell damage, chaos pen, flat chaos and ias.

OR with shaper/eld influence with endurance support socketed affix etc.

I was wondering how much better is one sword over the other. After talking with a friend the shaper/elder sword seems kinda expensive to craft. Im not sure if i want to sink everything into just the sword just yet.

p.s. I do NOT have the OSin or undeniable forbidden jewels and prob wont by the time the event ends.

Edit: Decided to craft my own sword and got this very lucky with this video.

[MSoZ Sword Craft]

(https://youtu.be/3UIogr-X1rU?si=ZIMFIZkkJEzdKDuA)

On my phone and not sure how to add pics but I was able to get 4 bis i believe:

socket gems do more damage support by endurance charge +1 max end and T2 ias.

Wondering if the last upgrade would be to runecraft return proj? Super expensive so looking for alternative