If you decide to buy a replacement stylus, the RV-15 RS model is the keeper of the two, as its a re-badged V15, although I am not sure which series.
The folks at Shure can probably help you with a genuine replacement stylus. You may want to send them an e mail. I would go this route before buying the Empire. It's probably the cheaper of the two choices as well.
Don't go for a generic replcement stylus, they are vastly inferior.