I can vouch for Hasofer.com I know the owner and some of the sofrim there personally and they are very frum, and do high quality safrus. I know many very chashuva people (including my own father and brothers) who get their tefillin and tashmishei kdusha there.
But as you don’t know me, I don’t know if that is worth much… you can call them and talk to the owner R’Moshe Flumenbaum. He is american and speaks English.