I bought an 18-200 to replace my broken 18-105, which really wasn't what I was expecting to do (or expecting to spend!) but I have to say, I'm loving the lens. I think I've just discovered my perfect all-rounder, and it doesn't hotspot on my IR D90 either, which both the 18-105 and Sigma 10-20 did (the latter badly!). The VR is awesome - so good that I'm questioning whether it worked on my 18-105!
However getting back to the D7100...
Anyone had any problems with light leakage through the viewfinder badly affecting images at (not massively) long exposures? I used to do 30 second exposures with an IR filter on my D90 without any real leakage issues through an uncovered viewfinder. I did try it on my D7100 before I got the D90 IR converted, and the light leakage wiped out all the long exposures I shot where the viewfinder wasn't covered. I thought it was just a problem with IR, but having done a few uncovered 30 second 10-stop ND images today, I've found a red band across the middle of them. Might be the 10 stop wasn't on properly, but they were fine when I covered the viewfinder without otherwise adjusting the camera.
Anyone else noticed a problem? Any reason that it would be noticeably worse than my D90?