I just tested this adapters with original T motor 14x props they are very nice and perform flawlessly I did have to increase the gains a little but im still not 100% sure that are better than the original DJI plastic props rigid props vs flex props what it does to the motors etc
He sure is Arrogant! He's also just a salesman. Definitely not technically minded. Knows nothing about centrifugal forces or what effect prop loading has on ESC's etc.. buyer beware
I am flying with the LP adapters and they work great with the CF props (14 inch). Bird is more precise and rock solid. Yes they are pricey but I am not going back to QR props.