I have both the TruGlo TFX Pros and the Cajun Gun Works Dawson Tritium sights. I like the CGW Dawson Tritium night sights better. There is nothing wrong with the TFXs, it is just the front sight is so large, it pretty much completely fills the notch between the rears, which makes it more difficult for me to feel like I am getting an accurate sight picture and alignment. The CGW tritium sights are a little lower profile as well, but the white ring and larger dot on the front, coupled with the serrated and smaller tighter spaced dots on the rear provided a much clearer and tighter sight picture and alignment for me, personally. The CGW sights are also about $20 cheaper than the TFX.
If you are familiar with red-dot scopes, the difference between the two is akin to having a 2MOA dot, and a 6MOA dot. The TFXs just take up so much of the sight picture. If all of your shooting is going to be 7-10yds and under, the TFXs are awesome, and perfect. If you want to be able to shoot at longer distance targets, then go with the CGW sights.