The motor is an amazingly huge thing for me. You will save alot of money if you dont have to have the AF-s, HSM, etc lenses. Also, this opens you up to alot more lenses since the D90 will mount and AF with every AF lens ever made.
Other than that:
Viewfinder Coverage: D90 has 96%, D5000 has 95%
Eyepiece size: D90 has 19.5mm, D5000 has 17.5mm
Focusing Screen: D90 hasType-B BriteView Clear Matte screen Mark II with superimposed focus brackets and On-Demand grid lines, D5000 has no grid lines
DOF Control: D90 has it, D5000 does not.
FPS: D90 has 4.5, D5000 has 4.
ISO sensitivity: D90 allows for steps of 1/3 1/2 or1 EV. D5000 has 1/3 or 1.
Face Priority AF: D90 has it, D5000 does not
Flash Bracketing: D90 has 2 to 3 exposures in increments of 1/3 to 2 EV. D5000 doesnt bracket flash.
Flash sync modes: D90 has Red-eye reduction with slow sync. D5000 does not
CLS: D90 has commander flash mode for off-camera flash. D5000 does not.
White Balance: D90 has Kelvine fine-tuning and Auto. D5000 has neither.
White Balance Bracketing: D90 has it, D5000 does not.
Screen: D90 has 3". D5000 has 2.7"
Screen Resolution: D90 has 921,000. D5000 has only 230,000
Playback: D90 has Pictmotion (slideshow with music), D5000 does not.
Camera Settings: D90 can save and load custom camera settings, D5000 can not.
Battery Life: D90 has 890 shots, D5000 has 510 shots
:thumbsup: :mrgreen:
Mark