Javila is largely correct... Ive been around Lex and Mandingo alot a few years back and mandingo is an honest inch longer & about the same diameter... Jack is in the same class but doesnt get as hard for whatever reason.... probably because he does much less Viagra than the other 2.... Diesel is thicker, but a truly ugly cock... Richard Mann is no joke either, and is harder & a better performer, every time, than either Lex or Mandingo... and LIVES to destroy white female throats.....