They are very nice, I am not totally convinced they are worth the extra cash tho? I have one and really like it, but I also like the SIG Romeo and Venom Vortex equally as well? I am still experimenting, one thing is to be sure you can replace battery without removing sight. And for me I like the smaller dots on pistols. I have all three of the versions listed above and am in the middle of field trialing them.