Howdy Mr. Richard,
Count my vote for the Trijicon nightsights. They are installed on all of my pistols, and I have never had an issue with the first set. Well I did replace one set on a Sig P226, but they had been installed on it for about 14 years, and were starting to get too dim.
I have tried other brands, such as Meprolight, but personally have just found the Trijicons to be the better deal for me. As Mr. Walt said, it largely is a matter of personal preference. I have had issues in the past with Meprolights needing to be replaced far too often, but it is possible I got some from a bad batch too. The company always replaced them under warranty, to their credit. But it got really old having to keep replacing them too.
I have never had a set of Trijicons fail on me like that, and I do own several sets of them. They are installed on all of my CZ pistols too, and I have been nothing but highly satisfied with them.
twoguns