Firstly, I thank those who answered my earlier enquiry about having my pecs re-done for a bit more size. You gave me some very useful tips. I want to ask specifically: "What is the difference between the oval implants and the (apparently more recently introduced) squarer ones". I cannot see any before and afters which specify, and photos of pec implants are often quite difficult to judge anyway as they do not capture the changes easily. Thanks again for the useful info so far.