Since we have a paying sponsor here that sells protein Its not fare to them to post links to other companies.
You can talk about Brands and prices all you want, but please dont post links to Stores or otherwebsites
Weight gainers are just protein powders (usually very crappy quality) with lots of bad quality carbs added.
Get a REALLY good quality WheyIsolate like this one - http://www.synthetek.com/Products/SynthePURE/synthepure.html
and then either add some maltodextrin or just eat some carbs - freshlybaked rolls are my favourite for this. Great combo, and you will get much better quality food than any weight gainr that exists.