I would highly recommend Vortex if you can swing it for what you are looking for. I've got Nikon, Leupold, Bushnell, Sightron, and Vortex scopes on various guns. You really can't beat the value for the money on Vortex products. I have used Swarvoski and NightForce scopes on friends guns. Are they better than a Vortex? Yea, but marginally, and no where near worth it in my opinion. I have a Strike Eagle on my AR and love it, the 1-6 Strike Eagle is around $300, my dad runs the 1-8 Strike Eagle and he really likes that version, but it is pricier. Depending on what you do with your gun that you need the optic to be tough (traversing the woods, hunting, run-n-gun) I prefer the lack of a large objective lens, like on the Strike Eagle, if you are doing a lot of early morning or late evening hunts you may need a larger objective lens.