NYGM was the result of starting from the core of RUB 1.45 and then progressively adding more custom mods until it became a supermod in itself. Although the basic was RUB, I think that NYGM in the current 2.5 status (If you are still at 2.2 get the patches to reach 2.5 status in the NYGM thread) will probably have overwritten the best part of the old RUB.
As of today, RUB is more outdated than the other mods as it was discontinued before them, yet it is still a good base if you want to fix the basics of the game and then start adding a custom combination of your preferred mods. For example, I have found out that it gives very interesting results if you add to it CB's destroyer behaviour mod, combined with Rubini's stay alert crew mod.
Also, the much smaller size of RUB pays off in much faster loading times and a bit more fps.
