Keyboard choices for 410s

[nichevo]

I have a friend with a T410s from work. She has applied a keyboard protector because it is so loud and when she types during meetings it's noticeable. Can anyone speak to the OEM keyboard choices for the T410s, and which would be quietest? Thanks.

[Colonel O'Neill]

They should all be about the same. The recent generations are actually less clacky and more thumpy than the previous ones.