I ended up just going with the Sachs SRE. Honestly the Chatter with the SB was not bad at all, it actually almost the same as the Sachs SRE, i do hear some chatter with it as well. My biggest dislike with the SB was gear shuddering on low revs in first and reverse just as you guys described with the 4 puck, other than that the engagement and feeling was fantastic.
One more dislike I had with the SB also was the gear noise I heard at low RPM, especially in 3rd while accelerating.
with the Sachs SRE everything went back to normal, similar to stock, with the shuddering and noise.
It definitely a better daily driver, so far I really like this set up. Only difference from stock is that the clutch pedal is a bit stiffer, but not as stiff as the SB that is for sure.
If FCP euro offered this went I got mine done 3+ years ago, I would have gone with this setup instead. The lifetime replacement warranty for me is the biggest selling point, however at the time all shops recommended SB and would warranty only this one for the 1 year 12k miles