Ouch! Tough crowd.
It might be more accurate to say that TWISBI seeks to be the Esterbrook of our day (certainly more than the modern Esterbrook). There are some obvious differences, like Esterbrook put far more effort into nib design and functionality while TWISBI puts more emphasis on filling systems. But in general, they occupy the same space in the market as a value-oriented alternative to other brands' low end offerings.
I've never handled a TWISBI in the flesh, so I can't speak to TWISBI's quality (or lack there of).
Anyway, I'm very happy the OP acquired an Estie, and I hope it works out for him.
Not a tough crowd at all.
Speedy trying to be the Esterbrook of today.....boy has he failed miserably.
In 50 years Twisbi's will be the joke of the fountain pen world... while Esties will still being used.
Never handled a Twisbi ? Well I have when Speedy WAS hawking his prototypes at the NY Pen show so many years ago. It was a piece of drek then and IMHO has continued in that vein.
As much as I don't care for chinese knock offs, I would give up all my vintage pens for those before I would ever own or suggest to anyone a *** twisbi