"In B (Jodo Shinshu), as soon as one attains absolute faith, one dwells in complete peace of mind. "
By "complete peace of mind", do you mean "assurance", that is the peace one feels because he knows he is assured of birth in Amida's Pure Land? This is how I understand what you said by "peace of mind". I don't think it means that one is no longer subject of suffering because one who received shinjin is still an ordinary person full of attachments during this life."
ANSWER (Inagaki Sensei):