Very happy with my fake Erika strap (link to eBay) so far.
I don’t have a tremendous amount of things I can compare it to, but my previous NATO/Zulu strap had about as much stretch as a car seat belt when dry, and became looser when wet.
No issue with this strap, the fit seems always right and nicely spread on the wrist.
One thing I did was file the stupid logo out of the buckle, which now looks roughly brushed, quite the opposite end of the spectrum from a zarastu polish if you see what I mean.
Huge bonus: typing/writing without the strap getting in the way or scratching the laptop.
10/10 would (gonna?) buy again