I've owned/own/or have used extensively the 35mm MkII, XD50A Apex, and the XQ50 Trail. For the money the trail can't be beat in my opinion. It offers the most value of any of the scopes I've listed. The REAP-IR has a VERY pretty image and has some great features and the size and weight is awesome, but you're are gonna pay a lot more for those things. If you can live with a higher native mag and less FOV the trail is the way to go. If you are hunting thick woods, I'd go with the XP50. The XD50A is still a great scope, but Pulsar just realeased the Apex XQ50 with a OLED screen, better sensor, for 1K less. So that's a no brainer. If you don't need the cool features of the trail the Apex XQ50 would be an awesome scope and you could buy nearly 2-3 of them for the cost of a REAP-IR. If money is not of a concern for you I'd get a REAP-IR. If you want the best value and the cool features like onboard recording and streaming, get the trail. If you just want something to hunt with and don't care about features and want to save some $$$ get the Apex XQ50. The battery life of the trails blows IR defense and the APEX out of the water as well. This is a big selling point for me.
Let me know if you guys have any other questions. This is of course just my opinion, but I've used these scopes quite a bit in various conditions hog and coyote hunting.