Bar Ends

Ive heard that I should keep the factory bar ends on instead of of putting the abs plastic ones on, the factory ones are weighted and keep the shaking down.  Is it that big of a deal to keep them or would the plastic ones keep the ends from sticking and causing more damge.  Any suggestions or recomendations.
Thanks. 

More weight in the bar end less buzzing and less shacking

replaced mine with some nice chrome ones.....with the pointed ends, looks great and also added them to the swing arm.  Not sure about the shaking etc......"she rolls fast fo sure!"