None are more fake looking, the responsives and soft touch offer better protection and have a lifetime guarantee, CUi have a ten year guarantee and it’s like 2% more chance of contracting CC (which is very small still) and rupturing.
The soft touch are filled 98% filled, so can offer a slightly less chance of rippling, but all implants will have it, they are harder then the other two though, despite the name.
The responsives move with your body, and are generally the softest feeling implants, they are 95% filled
The CUi are 95% filled too, and have a lesser range of sizes and profiles
Hope this helps xx