Actually there is.
Just that normal users might not appreciate it.
Having 51 focus points and a more precise focusing system is a major improvement.
Besides, u get weather sealing, better metering system, a better body ergonomically (Subjective) and also more control buttons.
Image Quality wise, it's said that both comes very close to each other, but there are still a lot of difference on the D300s which D90 users will find it pretty appealing.

Btw, i'd say wait for the D700 replacement if you intend to go FF. The time should come when the D700 gets a facelift or a new FF is introduced.

Last night I tried putting AFS 24-70 and sb900 on D90. I found it very hard to balance the camera because the body is too small. The last finger got no where to hold the body.
I think I'll have to put the grip on when using those heavy lens.

having 51 focus point and 11(IINM) crossed AF points is sweet man!!!!
I agree that nikon has more buttons and more ergonomic, I thought that it is very subjective too, but then after using nikon, i really find that the controls are great (but nikon menu sucks).....
IQ? 5dmk2 damn GOOD......resolution makes a diff here...
2nd on that, d90 grip a bit small

i know about the 51 focus point, but what is the 11(IINM)?

feel shy if i saw many ppl using same dslr like me wor.. i prefer to be unique user..

then buy D3x i bet u hardly meet someone using the same model in the whole year

Last night I tried putting AFS 24-70 and sb900 on D90. I found it very hard to balance the camera because the body is too small. The last finger got no where to hold the body.
I think I'll have to put the grip on when using those heavy lens.

since D90 so cheap now, jz get double body lor
then go out shooting with 1 body using 17-55 f/2.8, the other 70-200 VRII
sure unique 
i said this b4, jz hang a D3/D3x/D3s body only without lens on your neck oso can make ppl drool lor
go get BG then 

those who really use DSLR will think he/she is soh@i for doing tat... 

what shutter speed u are using? if u are using shutter priority, in day time, u will get dark images possible is bcoz
1) u r shooting against something very bright aka back light
2) your picture consists more white than black maybe about 80% white.. (solution: + exposure compensation)
3) your shutter speed set too high 1/4000?
if during daytime indoor, with ISO let say 200, even u use about 1/60 also wont be enough to expose your subject..

for night time, if u want to get still images when shooting kids playing skateboard,
1) u need around 1/125 or even faster, depends on situation
2) if image too dark, u can either a) increase ISO to the level that u can accept or b) flash..

u can learn slow sync flash too..
http://digital-photography-school.com/slow-sync-flash

slow sync flash example


u got me? 

if can afford d3s, then the lens is "sap sap sui" dy...

hanging a D3s but no lens = cant shoot...  

i really wondering.. if d90 users wanna sell their d90 body only now will be what price..

wan get d3s

i really wondering.. if d90 users wanna sell their d90 body only now will be what price..

wan get d3s

nonit laa.. simpan jadi 2nd body.. at yl sell d80 body for rm2.4k.. who want.. d90 new body onlie rm2.5k meh.. just topup a lil'bit can buy d90 body.. if u sell ur d90 body must below then 2K woo..

im just asking la..  we need to justify what is the suitable price for 2nd hand d90 body now perhaps can use as guideline

if asking, that means u alrdy hv the plan to sell it lor.. it's only sooner or later nia..