I like a quality rod for bottom contact fishing, such as c-rigging and t-rigging. Is an NRX more sensitive than a mid-range rod by a factor of X2? I can't without doing a side by side test with similar lines, reels, weights, etc. But I can say that an NRX or GLX at least as far as the bottom contact rods, are very sensitive and are fun to fish with.
I also won't pay full retail for an NRX or GLX. Not that I'm critical of those who do, but either wait for a sale, or check E-bay and the fishing site want ads. You can get some really great deals if you are patient and shop around. Very important also to get the original receipt or a wild card if you go the NRX or GLX route.
As far as moving baits like cranks, sensitivity isn't an issue for me, I just want something that is light, loads up well for a casting a crank that is in the rods weight range, and has a soft tip for hook setting and keeping the fish on.
Line type is also important when it comes to sensitivity.