I'd like to echo what janiern2 said about choosing saline rather than silicone. I agonized about choosing one of these and finally decided to go with saline. That was based partially on my age which was 75 at the time of surgery. I think silicone implant safety has improved from a few years ago to the point that now there are some plastic surgeons in my area who don't even offer saline. But I just didn't want to add one more possible issue to worry about, even if the worry is now minimal.

I'm pretty sure that should you choose a silicone implant, further MRI surveillance would be covered by your insurance but be sure to check that out.