Like to self program and experiment, 2 Programmers, NoahLink and Noahlink Wireless, 4 sets of modern HAs:
Oticon OPN-1
Oticon OPN-S1-Rechargeable
Oticon More-1
Signia Pure 7NX Charge & Go
So far I am liking the ability of the Signias' to remove background noise, while the OPNs both allow good speech understanding, I like the noise removal of the Signia a bit better.
With the OPN-1 Feedback is an issue at higher volumes, the Signias' exhibit minimal feedback, the OPN-S is the good at reducing feedback and the More is even better..
2 Way communication with the More is a plus if you have iPhone 11 or later.