Airscrew comparison.

[Sparky3]

No RC?

Yes my RC was working but no RTH button or map or anything on the screen. Had to fly slow and guess which way I was going.

 

[Ranger]

As already noted, they are only slightly less noisy, but lower in pitch (tone) than stock props. I'm not the best one for testing as I don't find much time to fly just now (retiring soon). Couldn't resist trying these and I'll carry them with me. As others have said, the folding props stay on in the case, these don't. But whenever I'm out where there might be people, I'll put them on. I love how the Spark is so inconspicuous.

 

[LowePro]

Video review with decibel meter and sound range tests here:

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Not much quieter at takeoff, but less whiney sound overall and sound travels less far from the drone. Will post more after further tests.

 

[hiflyer]

I have Master Airscrew props on my Mavic Air. does it make a difference? I suppose it does. Hard to tell ..it's noisy. I could never change out the Spark folding props for that small change. The performance difference is a moot point and not worth considering.