I used to climb and mountaineer...
Now-a-days I use carabiners mostly for loading and rigging stuff... so hard on them.
I buy in bulk and cheap when I catch a blem sale...
As for life safety stuff... name brands only... also a very personal decision on what works... some guys are OCD on a safety gate... some guys hate them. Some like "D"... some like oval. Weight is a big factor for some, others... not so much.
The ones above are great for safety chains on a trailer etc. Logging and winching, but know the limits and plan for failure.
I have only broken one carabiner to failure... and bent two.