What one of these lenses would you buy and why?

Http://www.amazon.com/Nikon-18-70mm-3-5-4-5G-AF-S-Nikkor/dp/B0001YEOCU
http://www.amazon.com/...B001EO6W8K
http://www.amazon.com/...B000ZMCILW
http://www.amazon.com/...B000LWJ1ES

I'm thinking of purchasing one but can't really find one that stands out completely. The 18-105 seems to be one that has come up more because it's longer range of focal length (am i using the term focal length right? Ha) Anyways, what lens would you purchase and why?

Added (1). Okay, well if you had $300 to spend on any portrait lens for a D90 what would give me the most out of my money? I already have a 35 mm DX 1.8 too.

Added (2). Is the difference between the 35 and 50 that great? I know everyone calls it the "nifty fifties" but would I see that big a of change in images between the two lenses?

I wouldn't buy any of them… None of them are great, buy if I had to choose I'd go with the 18-70. The 18-70 has a metal mount & and rubber weather-seal. The 18-55 & 18-105 are all plastic. With $300, I'd buy a 50 1.8 AF-S - http://www.amazon.com/...004Y1AYAC/

None. I'd get a 50mm f/1.8. The 35mm is normal/standard on your camera. The 50mm would be short telephoto pushing you out further from your subject to give more space between you and more light to hit your subject.

If you are after a more versatile lens, then the 18-105mm would be it but the optical quality would be poor. The longer the zoom range the poorer the optics. I would still recommend the 18-55mm in this case. It go go from wide to short tele. If you needed speed, your 35mm would come in handy.

You should see a difference between a 50 mm lens (medium telephoto and portrait lens) and the 35 mm (so called "normal" lens).

If you want to buy a single, one lens solution, save your pennies and buy the 18-200 mm lens

IMO if you want a budget portrait lens you should get a prime. This will give you better quality at a lower price and a prime is fine for portraits since you have time to "zoom with your feet". You also want a wide aperture (low f stop) for portraits so you can throw the background out of focus, and a medium long focal length for lens compression which is flattering to your subject.

I use the 85mm f1.4 and 135mm f1.8 Zeiss primes for portraits, but if I had a Nikon I would probably go with the 85mm f1.4G. However that's out of your price range and I would suggest as the best thing in your price range, this lens:

http://www.amazon.com/...00005LE75/

As you see the very first review proclaims "An oustanding portrait lens for both film and DSLR"

None, because I don't need any.