Whey protein suggestion

I've (27M) been going gym for last 6 months and can see alot of difference in the muscle gain and strength, but my weight still remains same around 64kg. I'm thinking to go for the protein powder, have used the whole truth protein powder for a week, but that contains only 15g and cost much. Can you help me decide which should be better among these three? Or if u can recommend any.

I've (27M) been going gym for last 6 months and can see alot of difference in the muscle gain and strength, but my weight still remains same around 64kg. I'm thinking to go for the protein powder, have used the whole truth protein powder for a week, but that contains only 15g and cost much. Can you help me decide which should be better among these three? Or if u can recommend any.