i think u'd better get a lens that'll suit FX as well..who knows u'll upgrade it?
er..better get the primes..50mm 1.4? or 35mm 1.8g? cheap n u'll like the bokeh u'll never have in zoom lenses..haha.
i hear some ppl say 50mm 1.8g has better color than 50mm 1.8d..
ur choice is either 50 or 35 lar..

i also want house, now paying for car edi.. pandai2 budget la haha
it depends on whether u will upgrade later or not, cos believe me fx glass is expensive. to resell dx then go fx will cost more man
but if ur confident u stick to dx, 1755 2.8 is a great all rounder lens. if u want low light then get the 35 f2/1.8 or even the nano 28 1.8g

but if u think ur gonna go fx in the future... this one really depends on what ur gonna use ur stuff for
+100   

I have been using the 1755 for 6 years. on my d80 to the d300. Thats my go to lens at all events. for 17-55 range, nothing special really. its like your kit lens, but the color and sharpness is diff, and when the lights are low, this lens really shines. sure there are no creamy bokeh... for me thats fine, as Im jst recording the event which usually means many people and many things happening at once. I dont jst isolate the prettiest gal in the function and stalk her all nite. I probably wont get paid if I tried that. Another thing impressed me about this lens is how reliable it is. Focusing is still highly accurate and fast, zoom still fluid. Only complain i have is the zoom and focus rubber ... change twice already!  I think need to go in for third change.

Thats my one and only DX glass. the rest are FX (ready), so if one day I do jump to FX, I think it will not be as bad as changing all the glass.
For me I would not take 2470 on a crop body. Reason? you lose out on the wide end. If you dont see yourself going FX in the next 2-3 years. Grab the 1755. Even next time you want to sell it, its still hold a decent value. At the end of the day, its your money you can buy what ever you want. Dont mind how people think, student with expensive lens. So what? 

tats my old man grumpy two cents no offense intended to anyone who feels offended.

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Added on August 31, 2012, 1:54 am
1/4000 ?    FX wor...    say it aint so ! 

Eh. I have the hood lol. The lens was stolen one the day i forgot to attach the hood on to the lens