Reliable and quiet motor/prop combo for small quad

Hi all

I realize that there are a lot of questions regarding which motors/ESCs/props to buy on here, but I've had some problems with my setup recently so I'd like some help on improving it.

My requirements are as follows: I am flying with a small quad (this 250). I do not want to race/fly acrobatics with it, rather I want to (autonomously) fly around and stream the camera to the ground. My quad weighs about 700g with the battery.
Since the quad is to fly around people, I would like it to be as quiet as possible or at least have the sound not be too annoying. I figured with a low Kv and high pitch props I could reduce the 'whine' for a less annoying lower pitch sound.

So what I ended up combining was this black widow 1800kv motor with built in ESC (which promises a simple and clean build) with 5x5 bull nose props.

I have now discovered that these motors/ESCs perform poorly. Ramping up the thrust very quickly can cause them to lose sync and not spin at the rate they are supposed to. I have had several crashes because one motor did not increase thrust as it was requested to due to this problem (in high pitch/roll rate situations).

So now I want to buy a new combination which is more reliable and perhaps more suited for my situation.

Can you provide some recommendations of motors/ESCs which you found to be reliable?
What amp rating should my ESCs have?
Is my idea to choose a lower Kv with higher pitch props sound?

Thank you for your insight!

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