My seat of the pants view is the SIG/Sauer P220 has the best single action trigger pull, however, I'm not nuts about the 2-stage nature of it. The Walther P38 and its derivatives have a darn nice SA pull without the slack of most DA/SA autos. YMMV
I agree 100% with that. In addition I find that the reach on the trigger of the CZ's is overly long making what would have been a fine trigger somewhat less than ergonomically well designed.I have had both SIG and a CZ. The CZ is not bad, but the SIG's are better. The CZ has a longer and heavier DA pull. SIG's get better with use and time: be sure to check out a well-used SIG if you can. Also, there was a design change for P-series SIG triggers some time ago; I like the older ones better though the difference is extremely subtle - and it may be the older ones are broken in better.