Just got the Meprolight RDS for my X95. I like it a lot. The large viewing window is great - I shoot right handed, but an left eye dominant. This is the only light that allows me to comfortably keep both eyes open and makes the confident that dot is truly on target.
The bad - the way the sight is designed, the emitter projects on a curved mirror that is laying at an angle to the lens you're looking through. Basically, anything light that is in front of you and above around 30 degrees also gets projected by this mirror, resulting in some odd reflections. I haven't noticed this outdoors, but it can mess with you with with all the overhead can lights I have in my house. The good news is that there is no red light projection from the front of the optic.
Overall, I'm very happy with it, but only had it a few days now. Time will tell if I would recommend it.