I asked for the sake of discussion.
You were asking for the sake of obfuscation, because rather than admit you lack the knowledge to give appropriate advice you planned on denying all terms and parameters the discussion might be based on, as demonstrated below:
Asking opinions from the internet is no more valuable than just buying a random meter.
Just like I said before, only when unqualified idiots chime in.
Unless someone here is qualified to disassemble and certify meters as "safe", and confirm the brand is producing with a solid QC, it's all hearsay. That was my point.
Your point is unadulterated horseshit. By the standard you're putting forward it's impossible to know the quality of any product.
No one one here (that I'm aware of) has the credentials to decide a meter is "safe".
I know what good input protection looks like. I know what trace and component spacing is required for a meter to be safe at different energy levels. I know the features of a properly designed housing. What more do you want to know?
If it is certified, who certified it?
Usually UL, Intertek or CSA.
Is it a real cert, or did they just slap it on the box?
You know the whole point of these certifications is that they are verifiable, right? You can go to their website and view their records.
How can one know their new fluke is safe without 3rd party certification? You can't.
I'm not even sure what you're saying here. Flukes
are independently certified.
The consensus seems to be spend above X dollars, and it should be safe.
I've seen a pretty wide range of meters recommended in this thread. I made two recommendations myself. One goes for around $200, but the other is less than $50 and carries an Intertek certification.
Common sense sanity checks like continuity, checking known voltage, and inspecting leads for damage are all thing we agree on.
Good.
My question is why such things couldn't be done with a HF volt meter?
Nobody said you can't. Lots of people said you shouldn't, and they're right. For the same reason you shouldn't go mountain climbing with carabiners that come with water bottles. It's rarely a good idea to do something dangerous with the worst equipment available.
My opinion is you don't need a CAT IV rated setup to check an outlet.
Correct. CATII is the proper rating for that kind of work.
I also feel a HF volt meter, set to DC volts, and probed into an outlet, is unlikely to cause issues.
Really?
I suppose that would depend on your objective. If you're trying to determine if the circuit is live I'd say that's just about guaranteed to cause some pretty serious issues.
Maybe try AC volts instead.