These pickups are very well made, have no hum or discernible noise and provide plenty of tonal options. I fitted them onto my 2007 Jazz Bass.
The sound is very subjective - I find them to be very 'clean' sounding and not very 'growly' or 'vintage' sounding. I really like the sound of them. The neck pickup is very warm but still has that crisp Di Marzio 'round' sound, and the bridge pickup has more of the classic Fender bridge 'Jaco' sound. I imagine the sound will vary from instrument to instrument. Between the neck and the bridge pickups there are plenty of tonal options and they seem to do subtlety well.
They are absolutely noise cancelling. There is no hum at all in any position. Playing in venues with big lighting rigs proves no problem at all (although that could be down to shielding within my bass).
Fitting was easy as they were drop in replacements, and the wiring was also no problem. Instructions are provided within.
Overall they are great pickups if you want a super clean sound, no noise at all, a lot of tonal options, and non vintage sound.
This is all my personal opinion as the sound of pickups is very subjective. I mostly use this particular bass for live function gigs and studio work. I've found these pickups are great for this purpose.