Hi Aadvark ABS-x from 3dFilapint and ABS-pro from OOznest are the same material made in Holland by Mitsubishi Chemicals subsidiary that Used to be called Dutch Filaments.

As to chemical resistance you are quiet right PET-G does have a very good chemical resistance profile but unfortunately it does break down when exposed to polyphenols which we use in one of our processes and also slowly to some strong alkali solutions again which we use. I found that out the hard way many years ago when I store a strong basic solution in a PET bottle because I had run out of HDPE bottles and had a mess to clear up.

I have just started using PET-G though and as you say not withstanding the above problems where it can be used it is pretty good stuff. Incidentally the PET-G I am using also comes from Dutch Filaments.

Finally send me an address and I will happily send You a sample of the ABS-x/pro I have.