I think with your budget, you can only afford to get the first 2
models even at a place such as safra toa payoh which supposedly
sells the cheapest in singapore....but then again, that's if you
are regular....
If you are offensive then go ahead with at700 and give the NS8000
and NS7000 a miss. If money is not an issue then go ahead and get
the latest AT900P but that will set you back by probably around
$260+. Heard the NS9000S is not too bad also. But that will also
set you back by around $250+.
However you mentioned that you were below average player, you might
as well get something non-yonex which will cost you a fraction of
the Yonex high end racquets. Or you can consider SOTX which can be
found at Safra Toa Payoh also...