no problem with the difference in modulation between the two? deliberating 4/2 & 4/4 options.been happy with 2 pot cura in back and 4 up front. good bleed is critical to them having decent bite (i was coming off xt's). rotor tolerances are tight, but just take a bit longer to set up. once set up, mine have been fine. used for riding locally, in pisgah, and a few lift days on my nomad.