Soy Protein 90% 13euro[14$] 2.5kg
Whey Protein 80% 25euro[27$] 2.5kg
[both with no flavor]
should i buy 2x whey or 4x soy

I m 2 poor 2 buy both [small europe country I earn 200euro/month] and I actually do work as electrician

i heard some bad things about soy protein
but there are counter claims that it is fine now
here are both certificates with analyze
http://www.nu3tion.com/sites/nu3tion.com/files/certifikaty/V020000_CoA_WPC80.pdf

http://www.nu3tion.com/sites/nu3tion.com/files/certifikaty/V010000_CoA_Sojovy_protein_90.pdf

So what are your experiences with Soy prot?