SME 309 or SME 3009r?

I have both arms. My turntable is an Avid Sequel. My cartridge is a Benz LP. I want to rewire one of the arms, but don't know which would sound best. I currently have the 309 on the table so I know how that one performs. I've had the 3009r for quite sometime just sitting on a shelf. It's in terrific shape and the person who gave it to me, and has since passed away, thought it would outperform the 309. Does anyone have an informed opinion? Thanks.