@sclark3 I had a BMX in June 2018 after 8 months of chemo. I knew I wanted immediate reconstruction. My plastic surgeon used a permanent expander that becomes the implant. This means the is no 2nd surgery needed to switch out the expanders for the implant. The brand name is Becker. I appreciate where you are coming from dealing with pain. Personally I was pleasantly surprised by how little pain there was. The expansion felt like a good workout at the gym, a bit sore but no pain. I also agree with @tessfair1 that you can always change your mind later on. She offers good advice to seek out a second opinion from a plastic surgeon. Good luck.