Ive never had any problems with my Kahr CW9(1000 rounds so far). A member here, Jocko, has over 10,000 rounds through his, MK9 I believe, w/out any problems. Every gun manufacturer has a few lemons or a few pistols that need a little ironing out. Alot of people on the internet exaggerate their problems, if they have any, with that certain firearm. Then if people read their posts and tell others, it becomes "these guns always have problems". I own a taurus revolver, my buddy has their PT1911 and my friends dad has their PT92. They are all 100% reliable, but if you ask almost everybody on the internet, most responses will be "they are always garbage".
I bought the Kahr CW9 because it is a true CCW in 9mm. Its smaller/lighter than the XD sc in every dimension and smaller/lighter than the G26 in every dimension, except the height. I have small hands and still cant get my pinky to rest over the grip of the XDsc and G26. I know you can buy mag extensions, but that kinda hurts its concealability. The Glocks also point terribly for me. The XD9 sc, despite the gauntlet of torture testing done to XD's, failed for me 5 times out of a box of 50 rounds. It was a range rental. The Kahr CW40 there fired perfectly but was too much to control for me. It also cost me $405 out the door after 6% sales tax, so roughly $100-$150 cheaper than the other models. That extra money saved could be set aside for ammo, a gun smith or shipping to the manufacturer, even though you likely wont need it.
Out of the 3 options you listed, i would go with the CZ.
