In my experience it is about choosing the least bad company rather than finding a good one. I’ve found Minipharmacy in LA to be reliable and small enough that when something does need to be fixed I can talk to real people who actually get things done.
I use ADS for test strips. I’d never trust them with an order for something important. @mremmers ADS bought US Med in 2021 so keep an eye on them.
If you want to avoid Adapthealth that bought Solara I’ve noted some of their acquisitions in my Dexcom supplier list. Wanna "break up" with my Dexcom supplier -- tips? - #21 by spdif