If as you say, you want to "experience" the .40S&W cartridge then you should obviously have a point of reference to compare it to. If you already own a 9mmp pistol that has a .40S&W counterpart...such as your CZ, that would provide you the best understanding of how the .40S&W handles. Start with a new platform and you won't know exactly what handling characteristics are cartridge and what handling characteristics are platform...