Welcome bigthu87. The .243 is a dandy cartridge that is fun to shoot and low recoiling. Regarding the rifles, they each have pluses and minuses. It's more important to select one that fits you, your body and that you feel comfortable with. Tikkas have good barrels and triggers and are fairly light weight. CZ's are very solid, have single set triggers (which I do like) and are well built. Either will get the job done! Good luck.