Approx 25 years ago, I went out with a woman a little older than me, who had breast implants. They looked fine, but were solid to touch, perfectly round rather than natural shape and she had very little sensation in her nipples.
I wouldn't stop a girlfriend/spouse from having it done, but I wouldn't necessarily agree with it.
I dont know if they were dodgy, and/or not done very well, but they were not nice.
Maybe implants have improved, and are more natural nowadays, but I would prefer natural anyday.
You have had plenty of responses on your other thread about you not being happy with your small breasts and plenty of men, me included saying it to you that small breasts are not an issue for men (well, men who aren't twats anyway).
Respectfully, I think your issue will not likely be resolved with implants, certainly not in the long term, and again respectfully, I think you need to seek some counselling or therapy to come to terms with whatever it is that you are concerned about, as I fear that you won't find the answers you seek under a scalpel.