Today I replaced a sharp 3 month old set of OEM Mazzer Super Jolly burrs with the SSP Red Speed burrs. The OEM burrs that were replaced were fully broken in. The SSP burrs were fresh out of the box.
1) The SSP burrs are built to a tighter tolerance. When installing the SSP burrs the holes on the burrs must be lined up precisely with the holes on the carrier in order to be mounted. The OEM burrs have a good amount of wiggle room.
2) SSP burrs have a top and bottom designation. The OEM pair have no top and bottom designation—both can be mounted in either position.
3) The SSP burrs are faster. 7 seconds vs. 11 seconds for a 17g dose.
4) When dialing in, the SSP burrs have a much wider sweet spot compared to the OEM burrs.
The shots from the SSP burrs had better mouthfeel and flavor separation than the OEM burrs. This difference was not subtle—it was visceral, clear, and obvious.
Lastly, many thanks to Eric from Lever Craft Coffee
for arranging the Red Speed group buy and for the bag of fresh roasted coffee he generously sent along with the burrs. Yay Eric!