You have some great lens to start...I too started with D3100+18-55+55-200 and its a great combo...bought 35mm just 2 months back and i am loving it..just share the pics from 500px here..there must be some link to share pics
Yes sir, both are very good lenses and take pretty sharp photos. Before I had confusion to choose between Sigma/Tamron 70-300mm and Nikon 55-200mm VRII but I took Nikon lens because it has VR, ED, Fast Focusing and takes sharp photos in the entire range. Sigma/Tamron 70-300mm has softness issue near 300mm and at that range macro works. OS/VC of the same lens are better but they are out of my budget.
Now I'm confused with 35mm F/1.8 and 50mm F/1.8. Both play different role in different conditions. 35mm is good for streets, indoors, tight spots, landscapes and 50mm is good for portraits, close-ups and etc. Being used with zoom lenses, its hard to decide prime lens. I also thought to get 50mm manual focus lens (used or new which goes for very cheap) and also 35mm G lens so that both will fulfill my needs. However, I have postponed the purchase until I decide a suitable one.