GATs are more of an all round nozzle than the Defy 3d.
The defy is a great nozzle for small targets like young grasses, but only average on drift and too fine for some jobs.
I prefer these to GATs, https://www.agrotop.com/en/products/nozzles/albuz/albuzR-cvi-twin/
Less inclined to block or get damaged and last a multiple of the length of the GATs.
I'm not sure one nozzle can be all things to all people.
There's no one size that fits all. 3Ds are great but prone to drift though they are better than the older versions. GATs will be less prone to drift but you'll need higher water volumes and bigger nozzles or you'll get a lot of blockages especially with trace elements and suspensions. The GATs are 2 nozzles in one, so if you have 03 Defys at 100 l/ha and 2 bar you'll need to have at least 05 (2 x 025) and run 160 l/ha at 2 bar.
For blight spraying or higher volumes in bigger veg you'd be better off with a Potato nozzle for less of an angle and better canopy penetration.
I run 025 Bubblejets at 100 l/ha and 3 bar in angled caps and alternating backwards/forwards along the boom but that's for cereals & oilseed rape.