Aftermarket Impeller over stock OEM

Hey All! I have a bone stock 2009 SeaDoo 255 RXTis in flawless condition. I have the pump off for inspection and want to know if an aftermarket impeller will benefit me in any way being the machine is stock. If so which one works best? There is nothing wrong with the OEM one but since it is apart is it worth upgrading or leave well enough alone.