Thanks for the info. I hadn't heard of the slide stop breakage issue.
The Witness I am looking at is a large frame version, as mentioned by J-Ho and Krautwagen. It's offered in 9x19, 38 Super, 40 S&W, 10mm, and 45 ACP. I have heard that the 10mm version of the large frame witness has had issues in the past when using full power loads. I was originally thinking about a 38 Super, but I don't want to add another caliber right now.
Carlos: Who's this Angus you speak of? Is he on the CZ forum?