Totally doable with corona scatter too, although from personal experience I've used animated/still masks. It really depends on the outcome and the camera movement of your scene/footage.
Choosing to move with corona scatter, I would suggest you make 2-6 different type of drops, not too much different from each-other do enable temporal consistency, avoid collisions and play with Transformations for more favorable result. Frankly, the secret is in the lighting and the shading of your textures/materials.