Which protein should I choose?
If you exercise recreationally and need to simply top up your protein intake, whey concentrate will probably be sufficient. If you want a higher protein content and less lactose, consider isolate. Before a longer period without food, casein or a blend containing it may suit you. If you avoid milk proteins, choose plant-based protein.
Are you new to protein supplements and have no reason to limit lactose or milk proteins? Try a smaller pack of whey concentrate first. You can find out whether you like the taste and tolerate it well without digestive problems.