Here’s a little picture comparison between the Aimpoint Micro H-1 and Bushnell TRS-25 micro red dots.
The first image depicts the difference in light transmission: cheaper TRS-25 filters a lot wider band of red, resulting in a very bluish image through the sight where the Micro H-1 appears almost natural.
![Lens color against white](http://special.squad.fi/wp-content/uploads/2015/02/bushnell_trs-25_vs_aimpoint_micro_h1-1024x683.jpg)