I personally like the look of the VTAC better than the TROY. But I am not sure how the VTAC would hold IWC components with the long holes (sliding/not staying in place). They are both manufactured by the same, just different look and VTAC is a tad heavier.

If you want to spend more money for the same thing DD just came out with the MFR rail that looks/performs the same. I would buy the troy/VTAC unless you have a money tree at home or its burning a hole in you pocket.