hey! theres loads of diff kinds..jst depends on what u look like and what look u want! You get standard allergan CUIs which are a great implant..10yr gaurantee against spontanious rupture or u can upgrade to allergan inspiras which are around £400 more, but they have a lifetime gaurantee! and you get both these in diff shapes..u get low profile (flatter and wider) or high profile (fuller and the base of implant is shorter-they project out more..prob the ones u see pics of most often) and u can get anatomicals, they r tear drop shaped for a really natural look! altho u can still achieve a natural look with the others, it depends on where they r placed- over or under the muscle! You will get told all this at ur consultations and the surgeon may rule some options out depending on ur shape (i couldnt get anatomicals or low profile because i have too much loose skin frm bfeeding so need high profile to fill it out) hope tht helps xx