What lens should a get for my Nikon d7100?

I'm getting a Nikon d7100 soon and want to replace my current lenses I have a Nikon 18-55 VR and a Nikon 55-200 VR. I'm getting a Nikon 50mm f1.8d as well! So what could replace my 18-55 and 55-200?
I don't want to spend to much and only want Nikkor lenses! And I'm a plane spotter so I need the zoom. What do you think?
Maybe the 18-200 or the 18-140 and 70-300 VR?
Let me know!

You already have 2 zoom lenses. What you need is more telephoto. You did not mention your budget so here are your choices.

http://www.bhphotovideo.com/...4109120004

At 24 MP the deficiencies of the 18-200mm will be magnified.
If you want more telephoto with quality, the 70-300mm AF-S VR can be worthwhile.
For general use the 18-140mm can be good, and you get a discount if you buy it kitted with the D7100.

What's lacking with your current lenses? If you need more reach, Nikon 200-500mm f/5.6 looks like a winner. It gets good reviews.

Sigma has a few zooms that go to 500mm.

Hi the lens will fit the D7100 as well so what is better is an ED lens as the image around the edge of the lens is better with depth shots. A 500 mm telephoto lens would be a better bet.

Stick with what you have, they work just as well on the D7100 as they did on your old body.

First off, don't limit yourself to just Nikon. Don't be blind to the fact that the Nikon lens isn't always the best lens or the best value. I suggest going to http://www.photozone.de/...lens-tests and checking out their sharpness charts. Photozone uses numerical values instead of confusing MTF charts making it very simple to see which lens is sharper and by how much. Sure a $1,600 Nikon may be sharper than a $500 Tamron equivalent, but when you consider the difference is a mere 10%, then you have to ask yourself if it's worth it to you to spend $1,100 for a 10% increase that you're likely to never notice.