I've not heard bad things about the EBC ones and I'm sure lots of folks on here have used them. So that then brings up the question, did you pre-soak the friction plates in engine oil for a few hours or over night before installing them..? The FZS1000 is notorious for not supplying enough oil to the plates, and pre-soaking them working around this issue.
If you have fitted them dry you will be getting some clutch drag, and the upshot of that is - they will over heat and wear prematurely and unevenly which will cause even more drag.
If you have fitted them dry you will be getting some clutch drag, and the upshot of that is - they will over heat and wear prematurely and unevenly which will cause even more drag.