There are large amount of papers which show that EfficientNet improves some CV tasks e.g. EfficientDet: Scalable and Efficient Object Detection.

But does it help much in real projects ? Do you guys have any experience with that ?

One more thing – ImageNet or COCO datasets are far away from what we have to deal with in real projects. Usually we have only small amount of images/classes, so improvements for COCO/ImageNet != improvements for real projects. What do you think ?