I have one of the FAT wrenches that I have been using for a couple years. It worked really well thus far and I will get it again in a heartbeat, no question. This last weekend I stripped one of the base mounting screws while mounting a micro t1. It was set at 20inlb, which was quite strange, but it most likely was a bad screw, not the wrench. Someone made a comment earlier about not needing a torque wrench... i guess those comments are inevitable when a question like this gets asked... True, you dont "need" one and in my younger years I installed many optics without one and they all worked great. However, for the money invested in long range equipment and in our never ending pursuit of perfection this is such a small investment for so much more benefit that it is a no-brainer for me. I am going to look into the cdi and vortex options more, as the specs mentioned above look really nice. The way the fat wrench gauge works it is more of a close questimate than an absolutely spot on measurement, and if the cdi can be adjusted in .5 increments, my assumption is it will have a clearer indicator. That will make it a hands-down better option for me, even though it will undoubtedly be more expensive.