I'd be checking forums for a deal on a used Aimpoint. I have had a couple TRS-25s and they are OK, but my Aimpoints are better in every single way... most notably on clarity (the FOV of the cheaper red dots are typically pretty heavily tinted), and battery life. Plus with an Aimpoint you know that durability is absolutely not an issue. When I bought my AR, it was important to me to get a well built and reliable rifle. I also wonder about people who spend hundreds/thousands to get a nice rifle, and then compromise it by buying cheap crap optics. You can find decent deals on used Aimpoints if you look. They are tough enough that it isn't really an issue to buy used.