The clicky switch produces a tactile bump and a loud clicking sound every time key travel is registered. It provides good feedback, so you know that everything is working properly.
Tactile switches are fun to use and offer you good feedback as well when typing. It is not as loud as a clicky switch and using it in public will not attract too much attention.
Linear switches are both smooth and easy to use, they are very popular in the gaming community. The linear switch is very suitable for those who like quiet and smooth typing.