Is bigger better?

No doubt you have had a browse through this,

It will give you an idea of the quality attainable and most of these are taken with small form factor drones, ie sub 1kg.
As for stability my mavic 2 pro is rock solid in 25mph winds, and can cope with 35mph no problem. And i have flown it in 50-60 and got it back safely. :wink::wink: