Look at the ingredient profile of these. Compare the ingredient profiles of brands, especially the carb source of it. You don't want something with it's carb sources coming from sugars.
MHP Up Your Mass, Universal Real Gains and the new Scivation mass gainer has pretty good profiles.

Lift weights and eat at least 4 meals a day.  Each meal must be packed with protein and calories (of course preferrably healthy as well) not just empty meals like mihun goreng or fish ball noodle soup.  Very simplified conclusion.