I have decided to go back and switch implants Sientra 695 moderate profile for 800 CC's hp. Do you think I will be happy?

Thank you for sharing your question.  Unfortunately without an in-person discussion as to your goal results, or a full series of photographs that demonstrates your before, current, and goal appearance it is difficult to offer definite advice.  For most women 700cc implants are substantial and increasing to 800 will make a small incremental change in appearance but can add to further risks - tissue sagging, thinning, implant displacement//malposition, etc.  I hope this helps.

This is a very difficult question to answer.  First of all, without a picture, it is impossible to answer.  Second, only you know what size/ shape you are looking for so it is hard for anyone other than your surgeon to help you answer.  From a technical perspective, the implant exchange surgery is usually much easier to recover from than the original placement.  Sorry I couldn't be more help.  Best regards, Dr. C