1998 Polaris RMK 700 (OEM or Dayco Belt)?

I need to purchase a couple of belts for my RMK. Current one is starting to wear and don't have a spare.

I see the Dayco HPX belts for $30 cheaper than the OEM Polaris. Probably always safe to say OEM, but is there a real difference?

Thanks!

1998 Polaris RMK 700 (OEM or Dayco Belt)?