I have had all types of cz's, including those with set triggers and those that don't have them. If you are trying for some seriously tight groups, off of a bench, then no matter how good a trigger job you do yourself on a stock cz, and they can be done pretty damn good, it will never come close to a set trigger. Sometimes, i could almost swear on my set trigger, that it went off by mind control only, you can set it so light.