I am debating whether to do 5.0 cm (2 inches) or 7.5 cm (3 inches).

For those of you who did 2, is this noticeable?

I think in lifts which puts me at 5'11 from 5'9. I feel like the 2 inches is somewhat noticeable. However from afar, I don't feel like 2 inch is all that. I think 3 inches is when things start to look quite noticeable.