Gaining

Mass gainer/weight gain powder

I am curious about adding weight gain powder in to my weight gain shakes in the future.
But I was wondering what kind I should get or even if it is worth it. Just wondering if anyone here has had success with it and what brand or kind would you recommend?
Or if there is anything I should look out for or a brand or something I should avoid all together?
Either way thanks for your time to anyone who takes time to reply!
7 years