I dont think that anyone can deny the amazing work that Chabad does. You may have philosophical and Hashkafic differences but the Avodas Hakodesh that they do on the scale that they do it, is astounding.
In the same vein Aish Hatorah and Ohr Somayach have reached out and returned hundreds (thousands?) of our brothers to Yiddishkeit, no doubt that these organizations/Yeshivos are absolutely amazing.
I dated a BT who strongly felt that these Yeshivos, who *I* have the utmost respect for, are mass brainwashing centers. So, to each their own.
FWIW, I believe that those who are seeking out the truth will find it with a special Hashgacha Pratis in a way thats tailor made for them.