I bought what I have because at the time the lens appeared quite useful. Now, I am used to certain lenses and those are my favs.  These may not be the best to recommend but work for me.

MOST USED
50mm macro, used often as a prime 50mm.  Sigma f/2.8
Every photographer needs to use a prime lens(no zoom) for a while. There is a discipline built in.

18-200 Zoom  f/3.5 - f/5.6
Fine lens and used everyday, the limit being that slow f/5.6 at full zoom.

NEXT FAVORITES
I have a f/4 100-300 zoom but it is not everyday, used when I need more reach and more light.

If you don't get a 50mm prime, consider a 30mm like the Sigma 30mm f/1.8.  On Nikon DSLR this gives the same approximate "crop" to the field of view as a 35mm cameras 50mm lens.  Keep in mind, regardless of crop, it is still a 30mm lens.  I love mine and it is excellent.