from my review, tamron is better in review rather then the truth. 

eh ur sabahan ka? ha haha oke bah kalau ko..

^ amirmunzir, the 1750tammy got back/front-focus problem.. 60% of them happens in D90 and the rest 40% is shared among all the other cameras (sony, other nikon bodies, canon, pentax, etc etc)

it took about 2 replacements before i was happy with my tammy. if you get a working lens trust me this baby won't make you regret a dime. a beginner or not, getting the 1750 with a constant f/2.8 instead of the kitlens is the best choice. there's hardly any difference at 105 and 50 that a good pp crop can't fix (come on a D90 is 12mgpx). the perspective doesn't change with a crop. you'll feel the crippling disadvantage of the f/5.6 max on the kit soon enough.

Nothing close to it at the moment for a f/2.8 fixed lens. Closest is the Sigma, and then the Nikkor 17-55 f/2.8 comes into picture already.
Agreed, if you get a good copy this is one heck of good lens. But if you don't then you're in deep shit. Need to keep exchanging until you get one. I wonder how if the new ones sold are actually refurbished units!

^
Very much depends on lighting la

according to ur like

F3.2-4 shud be fine wit me

depends on your distance from the subject too, but di466 can't tilt though, so if you take portait shots, the flash will be from 1 side, unless you use commander mode lah.

i dont like using flash for food photography because
most of the restaurant that i go is dark and using flash creates uneven lighting across the pic..perhaps im noob

My friend's case he did not send his body there. Futuromic borrowed a D300s unit from the Nikon center for calibration.