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You might be comparing apples and oranges here. There are night sights with a tritium insert to help align the sights in the dark. Meprolight and Trijicon are probably the two biggest sellers of these. I personally prefer the Trijicon, but it is really a matter of personal choice.

Then there are the fiber optic sights that help improve sight alignment during the day time. These use a short piece of fiber optic material and an open section of the top of the sight to gather light and make it appear to glow during the daytime. Truglo is one of the best of these.

But the difference between the Truglo and Meprolights is the difference between day time and night time use. I have never used the fiber optic sights and cannot comment on them.

Then there is the third type of sight. Truglo makes a sight that uses a combination of tritium and fiber optics. They call them the TFO sight. This sight has the open top to gather light during the day and a small amount of tritium to glow at night. They have a distinct advantage over all other sight designs in that the sight picture stays the same during the day and night. To the best of my knowledge, Truglo is the only manufacturer that has this style of sight. I have never used them and have heard mixed reviews on their durability.

I would prefer the TFO sights if I had a choice. I want to try them to see if they work as well as the design factors say they should. It could be the bad reviews were right, but I want to see for myself.