From what I hear, anything above 8x6 causes problems for partners. It will require a special person that can handle that. 8x6 will already cause problems for some but not most. What is the point of having it that big, 9x7 if you cant give pleasure with it? Unless the pleasure is only for yourself, then sky is the limit. Just becareful what you wish for, you may just get it. These gains are permanent. I have never heard of penis reduction.